Friday

April 18, 2014

April 18, 2014

Number of results: 129,734

**calculus**

I have three questions I'm having a terrible time with: 1)Find, if possible, the absolute maximum value and where it occurs for f(x)=ln(xe^-x) on (0,infinity). 2)Find the value(s) of "c" guaranteed by the Mean Value Theorem for the function f(x)=ln(x^2) on the interval [1,e]. ...
*Sunday, March 23, 2008 at 5:55pm by Chelsea*

**calculus**

Consider the function f(x)=3x31x2+1x+1Find the average slope of this function on the interval (21). By the Mean Value Theorem, we know there exists a c in the open interval (21) such that f(c) is equal to this mean slope. Find the value of c in the interval which works I...
*Saturday, September 4, 2010 at 12:05am by Jin*

**math**

Consider the function f(x)=2x^33x^2+2x2 Find the average slope of this function on the interval (2,6). ? By the Mean Value Theorem, we know there exists a c in the open interval (2,6) such that f'(c) is equal to this mean slope. Find the value of c in the interval which ...
*Wednesday, May 29, 2013 at 1:56am by kitor*

**calculus**

Consider the function f(x)=4sqrtx+5 on the interval [4,5]. Find the average or mean slope of the function on this interval. By the Mean Value Theorem, we know there exists a c in the open interval (4,5) such that f'(c) is equal to this mean slope. For this problem, there is ...
*Thursday, November 12, 2009 at 1:31am by michael*

**math**

Consider the function f(x)=2sqrtx+4 on the interval [2,8]. Find the average or mean slope of the function on this interval. ? By the Mean Value Theorem, we know there exists a c in the open interval (2,8) such that f'(c) is equal to this mean slope. For this problem, there is ...
*Wednesday, May 29, 2013 at 2:01am by kitor*

**calculus**

Consider the function f(x)=6sqrt(x)+1 on the interval [3,5] . Find the average or mean slope of the function on this interval. I FOUND THIS: (6sqrt(5)-6sqrt(3))/2 By the Mean Value Theorem, we know there exists a c in the open interval (35) such that f(c) is equal to this mean...
*Tuesday, July 13, 2010 at 12:39pm by John*

**calc**

consider the function f(x)=x^3 - x^2 - 3x -2. find the average slope of this function on the interval (-2,3). by the mean value theorem, we know there exists a c in the open interval (-2,3) such that f'(c) is equal to this mean slope. find the two values of c in the interval ...
*Friday, March 16, 2012 at 8:58pm by matt*

**Calculus Please help!**

Consider the function f(x)=4sqrt(x)+4 on the interval [2,5] . Find the average or mean slope of the function on this interval _______ <---A By the Mean Value Theorem, we know there exists a c in the open interval (2,5) such that f'(c) is equal to this mean slope. For this ...
*Friday, March 7, 2014 at 3:25am by ALI*

**Calculus**

Verify the hypothesis of the mean value theorem for each function below defined on the indicated interval. Then find the value C referred to by the theorem. Q1a) h(x)=√(x+1 ) [3,8] Q1b) K(x)=(x-1)/(x=1) [0,4] Q1c) Explain the difference between the Mean Value Theorem ...
*Saturday, November 3, 2012 at 11:57pm by Daniella*

**math**

verify that the function satisfies the hypothesis of the mean value theorem on the given interval. then find all numbers c that satisfy the conclusion of the mean value theorem. f(x) = x/(x+2) , [1,4]
*Sunday, November 7, 2010 at 9:29pm by help*

**Caluclus**

[Mean Value Theorem] f(x)=-3x^3 - 4x^2 - 2x -3 on the closed interval [0,8]. Find the smallest value of c that satisfies the conclusion of the Mean Value Theorem for this function defined on the given interval. I got 8 - sqrt(5696) / -18 = 3.748436059 but it's not right.
*Friday, October 23, 2009 at 12:57am by Z32*

**calculus**

verify that the function satisfies the hypothesis of the mean value theorem on the given interval. then find all numbers c that satisfy the conclusion of the mean value theorem. f(x) = x/(x+2) , [1,4]
*Sunday, November 7, 2010 at 8:17pm by Sasha*

**mean value theorem**

Show that the function f(x)=1-|x|, [-1,1] does not satisfy the hypotheses of the mean value theorem on the given interval. Also how do I graph the function together with the line through the points A(a,f(a)) and B(b,f(b)). Also how do I find values of c in (a,b) that satisfy f...
*Sunday, October 29, 2006 at 12:09pm by Jen*

**CALCULUS!**

Consider the function f(x)=4x^32x on the interval [2,2]. Find the average or mean slope of the function on this interval. __14__ By the Mean Value Theorem, we know there exists at least one c in the open interval (2,2) such that f(c) is equal to this mean slope. For this ...
*Thursday, July 21, 2011 at 7:22pm by Brit*

**Calculus Please help!**

f(x) -2x^3+2x^2-3x+2 Find the average slope of this function on the interval (31) ________ <--A By the Mean Value Theorem, we know there exists a c in the open interval (31) such that f'(c) is equal to this mean slope. Find the value of c in the interval which works ...
*Friday, March 7, 2014 at 3:23am by ALI*

**Calculus**

Find the average or mean slope of 2x^3 - 6x^2 - 90x +3 on the interval [-6,10]? By the Mean Value Theorem, we know there exists at least one c in the open interval ( -6 , 10 ) such that f'( c) is equal to this mean slope. ::>> I already found the mean slope of the ...
*Friday, April 9, 2010 at 3:47pm by Si*

**calculus**

Let f(x) = (x+1)/(x-1). Show that there are no vlue of c such that f(2)-f(0) =f'(c)(2-0). Why does this not contradict the Mean Value Theorem? I plugged 2 and 0 into the original problem and got 3 and -1 . Then I found the derivative to be ((x-1)-(x+1))/(x-1)^2. Whould would I...
*Sunday, December 17, 2006 at 5:37pm by Jamie*

**precalculus**

The intermediate value theorem states that: "for each value between the least upper bound and greatest lower bound of the image of a continuous function there is a corresponding point in its domain that the function maps to that value". This implies that when the function ...
*Sunday, December 26, 2010 at 11:13am by MathMate*

**Calculus**

Graph a function(any function) from a to x. I think you mean a is the lower limit and x the upper, but whatever: The question is what is the change of area under that function for a small change in the upper limit x of dx? It is in fact the value of the function at x times dx ...
*Friday, April 22, 2011 at 5:27pm by Damon*

**calculus II**

I have the function f(x)=e^x*sinNx on the interval [0,1] where N is a positive integer. What does it mean describe the graph of the function when N={whatever integer}? And what happens to the graph and to the value of the integral as N approaches infinity? Does the graph ...
*Wednesday, February 24, 2010 at 1:54am by Paul*

**calculus**

Consider the function f(x)=3x^2 5x on the interval [-4,4]. Find the average slope of the function on this interval. By the mean value theorem, we know there exists at least one c in the open interval (-4,4) such that f(c) is equal to this mean slope. For this problem, there...
*Friday, March 16, 2012 at 8:37pm by john*

**calc**

Consider the function below. (Round the answers to two decimal places. f(x) = 2x tan(x) -p/2 < x < p/2 (a) Find the interval where the function is increasing. Find the interval where the function is decreasing. (b) Find the local minimum value. (c) Find the interval ...
*Sunday, April 4, 2010 at 4:51pm by bella*

**calc**

Consider the function below. (Round the answers to three decimal places. If you need to use - or , enter -INFINITY or INFINITY.) f(x) = 4 + 4x2 - x4 (a) Find the intervals of increase. (Enter the interval that contains smaller numbers first.) Find the intervals of decrease. (...
*Saturday, April 3, 2010 at 11:36pm by Anonymous*

**Math**

Consider the function f(x)=8(x^(1/2))+7 on the interval [1,5]. By the Mean Value Theorem, we know there exists a c in the open interval (1,5) such that f'(c) is equal to this mean slope. For this problem, there is only one c that works. Find it.
*Saturday, July 19, 2008 at 5:21pm by Blair*

**math question 3- very urgent !**

Tha average value of f is the integral of the function (over that [0,2] interval) divided by the interval width, 2. I assume you know how to integrate the function. The value of the integral is 5/2*4 + 18 = 28 . The average value is therefre 28/2 = 14 Now find what value of x ...
*Sunday, December 19, 2010 at 11:15pm by drwls*

**calculus**

Find the values of c that satisfy the Mean Value Theorem for f(x)=6/x-3 on the interval [-1,2]. Is it no value of c in that interval because the function is not continuous on that interval???
*Thursday, December 18, 2008 at 11:58pm by Theresa*

**calculus**

Find the values of c that satisfy the Mean Value Theorem for f(x)=6/x-3 on the interval [-1,2]. Is it no value of c in that interval because the function is not continuous on that interval???
*Friday, December 19, 2008 at 12:20am by Theresa*

**math- mean value theorem**

Hi I am having some trouble with these few quetions I would appreciate some help so that I can understand them better. 1) What, if anything, does the mean value theorem guarantee for the given function on this interval? a) f(x) = x^2 - 2x + 5 on [1,4] --I am a bit uncertain on...
*Friday, September 7, 2007 at 8:08pm by manny*

**calculus**

Find the average value of the function f(x)=8x^2-5x+6 , on the interval [3,5]. Find the value of x-coordinate at which the function assumes it's average value. what is the average value = to ? what is the x coordinate = to ? Thanks
*Saturday, December 3, 2011 at 4:06pm by li*

**Calc, Mean Value Theorem**

Consider the function : 3x^3 - 2x^2 - 4x + 1 Find the average slope of this function on the interval. By the Mean Value Theorem, we know there exists a "c" in the open interval (-2,3) such that f'(c) is equal to this mean slope. Find the two values of "c" in the interval which...
*Friday, November 10, 2006 at 2:53pm by Michael*

**Calculus Help Please!!!**

Does the function satisfy the hypotheses of the Mean Value Theorem on the given interval? f(x) = 2x^2 − 5x + 1, [0, 2] If it satisfies the hypotheses, find all numbers c that satisfy the conclusion of the Mean Value Theorem. (Enter your answers as a comma-separated list...
*Tuesday, April 1, 2014 at 10:08pm by Layla*

**Calculus Help Please!!!**

does the function satisfy the hypotheses of the Mean Value Theorem on the given interval? f(x) = 2x^2 − 5x + 1, [0, 2] If it satisfies the hypotheses, find all numbers c that satisfy the conclusion of the Mean Value Theorem. (Enter your answers as a comma-separated list...
*Friday, April 4, 2014 at 11:12pm by Uygur*

**Calculus**

1. Determine whether Rolle's Theorem applied to the function f(x)=((x-6)(x+4))/(x+7)^2 on the closed interval[-4,6]. If Rolle's Theorem can be applied, find all numbers of c in the open interval (-4,6) such that f'(c)=0. 2. Determine whether the Mean Value Theorem applied to ...
*Wednesday, October 31, 2012 at 12:11am by Rudy*

**Maths**

Question 1: The gradient of the graph of f(x) at any point is,ax^2-12x + 9, and the point,(2,-3),is an inflection point of f(x). (a) Find the value of the real constant, a. Find the function f(x). (b) Find the stationary points of the function, then specify the intervals on ...
*Saturday, May 10, 2008 at 4:55pm by Victoria*

**Last two CALC questions. :)**

8. If f(x) = sin(7 − 5x), find f′(π), which is the derivative at π: −0.754 −0.657 0 * 0.657 3.770 9. Given the function: g(x)={x+b, x<0 {cos(x), x≥0 Find the value of b, if any, that will make the function differentiable at x = 0. 0 1...
*Friday, December 20, 2013 at 12:59am by Samantha*

**Calculus **

1. a) For the Function and point below , Find f(a). b) Determine the equation of the line tangent to the graph of f at (a,f(a)) for the given value of f(x) = 4x2+2x, a =1 F(a) = y = 2. For the function find f using the defination f(x) = lim(h→0) Determine the ...
*Saturday, February 11, 2012 at 12:28pm by Tired*

**Calculus **

1. a) For the Function and point below , Find f(a). b) Determine the equation of the line tangent to the graph of f at (a,f(a)) for the given value of f(x) = 4x2+2x, a =1 F(a) = y = 2. For the function find f using the defination f(x) = lim(h→0) Determine the ...
*Saturday, February 11, 2012 at 12:45pm by Tired*

**calculus**

The derivative of that function is y ' = (ln x + 1)*x^x I will provide a website with the derivation separately. I don't know what you mean by the "turning point of the function y-x^x". That function would always be zero. Do you mean the minimum of the function y = x^x?
*Sunday, March 30, 2008 at 1:36am by drwls*

**calculus **

Find a point c satisfying the conclusion of the Mean Value Theorem for the following function and interval. f(x)=x^−1 [1,9]
*Sunday, November 6, 2011 at 1:09am by saud*

**calculus**

Use the intermediate value theorm to show that the polynomial function has a zero in the given interval f(x)=x^5-x^4+8x^3-5x^2-14x5;[1.4;1.5] find the value of f(1.4) f(1.4)= find the value of f(1.5) f(1.5)=
*Thursday, December 27, 2012 at 7:10pm by Brock*

**Algebra**

Use the intermediate theorem to show that the polynomial function value has a zero in the given interval f(x)=x^5-x^4+8x^3-7x^2-17x+7; [1.6,1.8] Find the value of f(1.6) Find the value of f(1.8)
*Sunday, March 31, 2013 at 7:28pm by Alley*

**Math- Statistics**

A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10. * a. This sample of 36 has a mean value of , which belongs to a sampling distribution. Find the shape of this sampling distribution. * b. Find the ...
*Tuesday, February 8, 2011 at 9:14pm by Tammy*

**Mean-value theorem**

The mean value theorem states that a continuous function between x=a and x=b will have at least one tangent parallel to the chord AB. For f(x)=(1-x)³, the chord between 0 and 3 has a slope of s=(f(3)-f(0))/(3-0)=-3 The value(s) of c required must satisfy f'(c)=-3 So, ...
*Sunday, January 23, 2011 at 12:13am by MathMate*

**Maths mst**

Question 2: Consider the function,f(x) = (2/x+2)+4exp(-2x). (a) Find the area under the graph,A,and the average value,W, of the function,f(x),in the interval,[2,5]. (b) Find, f'(x), f''(x-2),and,f'(0) . (c) If, g(x) = x^2-1,find f(g(x)),and d/dx(f(g(x)) ?
*Saturday, May 10, 2008 at 4:58pm by Victoria*

**Algebra**

f ( x ) mean : " f is a function of x " f ( 1.5 ) are value of FUNCTION 3 x - 2 when x = 1.5 so of f ( 1.5 ) = 2.5
*Thursday, March 21, 2013 at 11:39am by Bosnian*

**Math Help!**

A.) Determine "a" and "k" so both points are on the graph of the function. 1.) (0,1) (2,1); y=a(x-1)^2+k 2.) (1,11) (2,-19); y=a(x+1)^2+k B.) Determine whether or not the function f(x)=0.25(2x-15)^2+15 has a mazimum or a minimum value. Then find the value. C.) When y=2(x-3)(x+...
*Tuesday, January 21, 2014 at 7:34pm by Lanie*

**Calculus**

The present value of a building in the downtown area is given by the function P(t) = 300,000e^-0.09t+ĄĖt/2 f or 0 ĄÜ t ĄÜ 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a point ...
*Thursday, April 11, 2013 at 1:14pm by Deeno*

**Calculus**

The present value of a building in the downtown area is given by the function P(t) = 300,000e^-0.09t+ĄĖt/2 f or 0 ĄÜ t ĄÜ 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a point ...
*Thursday, April 11, 2013 at 1:17pm by Deeno*

**math**

verify that the function satisfies the hypotheses of the mean values theorem on the given interval. then find all numbers c in the given interval that satisfy the conclusion of the mean value theorem. f(x)=2x/x4 [0,3]
*Sunday, April 28, 2013 at 3:45am by sonia*

**algebra (difference between function and "something else")**

I don't know what you might mean by "something else", but a function should be defined in your book. In short, if any x-value leads to two or more y-values, then whatever relation you have is not a function. I can't see your graphs or columns or whatever, so I can't speak ...
*Wednesday, September 12, 2007 at 7:35pm by stapel*

**Algebra**

53. Determine if y=x^2 is a function. i think the answer is yes, but can someone explain to me why it's yes, and how you find out if it's a function or not. I know that for every value of x there should be one value of y, but how do you figure that out in a problem like this?
*Friday, May 7, 2010 at 12:27pm by y912f*

**Calc**

f(x) = x^2 / (x - 7)^2 (a) Find the vertical and horizontal asymptotes. x= y= (b) Find the interval where the function is increasing. Find the intervals where the function is decreasing. (Enter the interval that contains smaller numbers first.) (c) Find the local minimum value...
*Monday, November 16, 2009 at 4:53pm by Bobby*

**Calculus**

The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+ãt/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a ...
*Friday, April 12, 2013 at 6:23pm by Deeno*

**Calculus**

The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+(t)/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a ...
*Friday, April 12, 2013 at 11:18pm by Deeno*

**Calculus**

The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+(t)/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a ...
*Friday, April 12, 2013 at 11:18pm by Deeno*

**Calculus**

The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+(t)/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a ...
*Sunday, April 14, 2013 at 1:33am by Deeno*

**function or not?**

Well, we could argue about if the square root can be negative. However the way I see it for x = 0 for example, f(x) could be either -3 or +3. A function can have only one value of f(x) for each value of x so I say this is not a function. By the way the inverse, y = x^2-9 is a ...
*Thursday, August 13, 2009 at 8:49pm by Damon*

**pre calc**

The Identity Function The Squaring Function The Cubing Function The Reciprocal Function The Square Root Function The Exponential Functional Lo The Natural Logarithum Function The Sine Function The Cosine Function The Absolute Value Function The Greatest Integer Function The ...
*Friday, December 18, 2009 at 11:09am by kim*

**calculus**

use the intermediate value theoremto show that the polynomial function has a zero in the given interval f(x)=x^5-x^4+8x^3-5x^2-14x5;[1.4;1.5] find the value of f (1.4)= find the value of f (1.5)= show work, thanks
*Sunday, December 30, 2012 at 6:21am by Julienne*

**Mathematics optimization**

The arithmetic mean of two numbers a and b is the number(a+b)/2. Find the value of c in the conclusion of the mean-value theorem for f(x)=x^2 on any interval [a,b].
*Saturday, September 3, 2011 at 7:33pm by Jane*

**Function Graphs**

How do use a graph to find a particular function value like y=f(x).Find 2? Also, how do you use a graph to determine the function's domain and range?
*Saturday, September 1, 2007 at 3:02pm by Soly*

**Calculus**

Find the extreme value(s) of the function f(x)=1/(1-x^2). I tried, and for the first derivative I got -1/(2*sqrt((1-x^2)^3)). I then found critical values of the function to be -1 and 1. However, the textbook says that the minimum value is 1 at f(0), and I have absolutely no ...
*Tuesday, January 1, 2013 at 12:38pm by Leasha*

**Calculus**

I have the function f(x)=e^x*sinNx on the interval [0,1] where N is a positive integer. What does it mean describe the graph of the function when N={whatever integer}? And what happens to the graph and to the value of the integral as N approaches infinity? Does the graph ...
*Friday, February 19, 2010 at 3:57am by Paul*

**computer programming**

write a program that can read 10 interger values into an array and find the total for that array in the program , write 3 fiunctions: a function to read values , a function to find the total of element value and a function to print value
*Thursday, December 1, 2011 at 11:37pm by Anonymous*

**computer programming c++**

write a program that can read 10 interger values into an array and find the total for that array in the program , write 3 fiunctions: a function to read values , a function to find the total of element value and a function to print value
*Thursday, December 1, 2011 at 11:39pm by shasha*

**statistics**

95% confidence interval indicates that you have 5% outside the confidence interval and 2.5% on either side. This is an area of .025. You can use a calculator or a t-table to find the critical value. Multiply that value times the standard deviation. add this value to the mean ...
*Wednesday, February 13, 2013 at 1:08pm by JJ*

**Calculus**

Suppose that you can calculate the derivative of a function using the formula f(x) = 2f(x) + 4x. If the output value of the function at x=4 is 3 estimate the value of the function at 4.012. Linear Approximation right? I'm not seeing an f'(x) anywhere. Can you retype your ...
*Saturday, October 14, 2006 at 2:14am by Michael*

**Calc and Vectors**

Corey is asked to find the maximum value of a function. Not having a complete understanding of the process, Corey decides to find the derivative of the function, set it equal to zero, and solve. The resulting value, Corey reasons, will yield the maximum point. Explain fully ...
*Friday, January 10, 2014 at 7:57am by Court*

**math/alegbra**

Well for one thing, we know f(x) is equal to y. It is the original function. For f(x)=3x^2 -5 We want to find the y value when x=-4 So just plug in -4 for all the x's and get the y value. f(-4)=3(-4)^2-5 f(-4)=3(16)-5 f(-4)=48-5 f(-4)=43 f(-4)=43=the y value at x=-4 So for the...
*Friday, October 26, 2007 at 9:21pm by Corin*

**Use the intermediate value**

Reread the intermediate value theorem, it concludes that one can't get to 10 from -1 with a continuous function without passing the y=0 axis. Often, the mean value, and intermediate value theorem are written in math texts by lawyer want-to-be types, so complex, it loses its ...
*Tuesday, March 26, 2013 at 10:53am by bobpursley*

**calculus 2**

Suppose that you can calculate the derivative of a function using the formula f'(x) = 4f(x) + 2x. If the output value of the function at x= 4 is 2 estimate the value of the function at 4.013
*Sunday, November 15, 2009 at 1:52pm by rimmel*

**Statistics**

It helps to know how to read a z-table to answer these kinds of questions. For part A, you will need to find a z value where 80% is below the z and 20% is above the z. Remember that the mean divides the distribution in half: 50% is below the mean and 50% is above the mean. ...
*Monday, September 10, 2007 at 7:24pm by MathGuru*

**math**

A straight line, unless vertical, has one and only one value of the dependent variable (y for example) for every value of the independent variable (x for example). It is therefore a function unless it is vertical. Therefore I claim that all linear equations are functions ...
*Monday, October 20, 2008 at 5:29pm by Damon*

**math - algebra**

f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output value of 5,000?
*Tuesday, November 1, 2011 at 7:11am by Alexis*

**math - algebra**

f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output value of 5,000?
*Tuesday, November 1, 2011 at 7:12am by Alexis*

**math - algebra**

f(t) is an exponential function with f(0) = 200 and f(3) = 2000. a) Use the form f(t) = Pe^rt to find the equation of this exponential function. b) In the form f(x) = Pa^x, a is the growth factor. find the growth factor. c)What input value gives an output value of 5,000?
*Tuesday, November 1, 2011 at 4:53pm by alexis*

**Algebra2**

Complete parts a c for each quadratic function: a. Find the y-intercept, the equation of the axis of symmetry and the x- coordinate of the vertex. b. Make a table of values that includes the vertex. c. Use this information to graph the function. 1. f(x) = 2x^2 2. f(x) = x^2...
*Friday, February 8, 2008 at 8:46pm by Mara*

**Math**

How to find coordinates of vertex, and find out if the function has minimum or maximum value and find that value? f(x)=2x^2+8x+9 & f(x)=-x^2-2x+7 Please explain..I'm very lost. :(
*Sunday, February 16, 2014 at 8:42am by Amame*

**Math**

is x=5 a function No. The plot (graph) is a vertical line at x=5, so y can have many different values, in fact, any value. a function has one y value for each x value. thanks
*Sunday, November 5, 2006 at 8:20pm by Nikki-Ole*

**Calculus**

Find the linear approximation L(x) of the given function at a, and use it to approximate the function value at the given x-value. f(x)=x^(1/3), a=-27, x=-28 I found the derivative to be f'(x)= 1/[3(-27)^(2/3)] but it does not exist because a number cannot be negative in a root.
*Tuesday, October 26, 2010 at 8:59pm by sh*

**stats**

Consider an infinite population with 25% of the elements having the value 1, 25% the value 2, 25% the value 3, and 25% the value 4. If X is the value of a randomly selected item, then X is a discrete random variable whose possible values are 1, 2, 3, and 4. (a) Find the ...
*Wednesday, November 5, 2008 at 8:40pm by Mischa*

**MATH**

A graph is used to relate two variables x, and y using a relation called a function. For example, y=2x is a function that tells us that y has a value equal to twice the value of x. This is what Jenny asked about, the "equation", or the function that relates x and y. It is ...
*Monday, November 23, 2009 at 11:57am by MathMate*

**math/calculus**

let f(x)=ln(x)x>0 let k(x)= f(g(x)) and m(x)= f(g(x)) a) Find the domain of the function K(x). b) Find the domain of the function M(x). c) Find the value of k'(5)
*Monday, January 2, 2012 at 11:48am by angie*

**Calculus-Mean Value Theorem**

Find the function G(x) whose graph passes through (pi/38,-12)and has f(x) as its derivative: G(x)= I already found which is: F(x)=76(1/-19)cos(19x)+C
*Wednesday, October 23, 2013 at 5:30pm by Sara*

**inverse function question**

There is no such thing as the log of a negative number or zero. Because of the absolute value in the definition of f(x), the only value of x for which f(x) is not defined is x = 1/2. An inverse function of f(x) can be defined for all x, but there will be two values of f^-1(x) ...
*Thursday, November 8, 2007 at 4:47am by drwls*

**Pre Algebra**

try drawing a graph. in the definition of a function, an x value can only have one y value. since the x value of four has two y values (5 and 9), it can't be a function. try going to wikipedia and searching for "function mathematics" if you're still having trouble. it has the ...
*Tuesday, November 10, 2009 at 4:50pm by Blake*

**math**

I believe that there has to be another part to this question. I will assume the function describes the number of tickets sold for a given day, if x is the day. B) the function is a parabola which opens downwards, so it has a max value, the function value being that maximum. A...
*Tuesday, October 6, 2009 at 8:12am by Reiny*

**calculus**

You need to specify both a lower and an upper limit for the x integration. You only specified one. The indefinite integral of that function, which you need to solve the problenm is (1/2)e^x^2. The value of that function at x = 1 is e/2. The value at x = 0 is 1/2. If the lower ...
*Monday, February 23, 2009 at 11:47pm by drwls*

**inverse function question**

Hey, I'm having trouble fully understanding absolute value graphs and I've been asked find the largest value of a so that f^-1 exists for the function: f: (-efinity,a) --> R where f(x)= logel2x-1l *note: i have used 'l' to represent the straight line indicating the it is an...
*Thursday, November 8, 2007 at 4:47am by elle*

**calculus**

Constant annual percentage growth The function gives the value of a home in dollars in the year 2000 + t. Find the constant annual percentage change in the value of the home. Give appropriate units with your answer. Again, I'm not sure what function is being referred to here ...
*Tuesday, September 5, 2006 at 8:03pm by Joshua*

**algebra**

y = 3 x + 5 ???? That is a straight line. for every value of x there is one and only one value of y. It is a function. But what does your > sign mean?
*Tuesday, July 12, 2011 at 7:22pm by Damon*

**statistics**

basically i'm at the begining of the text book doing summer work it's talking about mean and stuff asked to find the mean of a set of data and given 14 different numbers the question then goes on and tells me a fifteenth number is added to the set of data with the value of ...
*Wednesday, July 15, 2009 at 10:13pm by statistics*

**algebra**

Find the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function f(x)=2-x^2
*Sunday, July 11, 2010 at 7:13pm by sam*

**algebra**

you give me the answer but didn't really tell me how you did it so i can figure how to find the other numbers giving. also was just respneding that the problem was true as you said it made nosense. evaluate each function for the value specified. evaluate each function for the ...
*Friday, May 18, 2007 at 9:12pm by clueless*

**Calculus**

Let f be a twice-differentiable function such that f(2)=5 and f(5)=2. Let g be the function given by g(x)= f(f(x)). (a) Explain why there must be a value c for 2 < c < 5 such that f'(c) = -1. (b) Show that g' (2) = g' (5). Use this result to explain why there must be a ...
*Monday, February 7, 2011 at 10:53pm by Leanna*

**calculus**

is the function f(x)=x^2 increasing on decreasing at x = -1. can anyone please check my reasoning: the value of the derivative of the function at x=-1 is -2, so that means the slope of the tangent line to the graph at that is a negative value so the function is decreasing at x...
*Monday, June 29, 2009 at 11:49pm by jeff*

**MAT 116 Algebera 1A**

First, what is a function? In Cartesian mathematics, a function is an expression which, for any value of x, there exists one and only one value of y. A function can be either a straight line (linear) or a curvy line (non-linear). If you look at a linear equation graphically, ...
*Sunday, May 25, 2008 at 3:36pm by mohana*

**Precalc**

generally speaking, if for any x you pick a unique value of y is determined by your equation, then the relation is a function e.g., y = x^2 is a function. any x you choose yields only one y value but x = y^2 is NOT a function because x = 9 yields 2 values of y, namely ą3
*Friday, January 2, 2009 at 1:22pm by Reiny*

**calculus**

When they say "find the curve" they mean find the equation of function whose graph would be that curve. your equation y = 2x^2 + 3x - 4 would graph to be a parabola, and a parabola is a curve. As to the constant, remember that if you differentiate an equation like y = 2x^2 + ...
*Sunday, November 18, 2007 at 12:49am by Reiny*

**Algebra Check**

What is the domain of the function below? ((0,2),(3,1) (5,2) (8,4)) a. (1,2,4) b. (0,3,5,8)** c. (0,1,2,3,4,5,8) d. ((0,2),(3,1) (5,2) (8,4)) Is the following relation a function? ((0.3,0.6), (0.4,0.8), (0.3,0.7), (0.5,0.5)) a. yes b. no** c. cannot be determined What is the ...
*Monday, November 11, 2013 at 3:07pm by Anonymous*

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