Friday

October 21, 2016
Number of results: 152

**calculas**

If f(x)=3x-1 and g(x)=2/3x+2 find: a) f(-3)+g(6) b)f(3)-g(2)

*June 5, 2011 by Genevieve *

**ap calculas**

derivative of (-x^3+3)(3x+2)^3

*March 25, 2013 by Rebecca*

**calculas**

how to find the x intercepts for f(x) = 3x^3+7x^2+3x+1

*March 23, 2009 by Sandra*

**calculas**

f(x)=ln[(1+e^2x)/(e^2x-4) find the derivative

*March 29, 2010 by Lori*

**pre -calculas**

No answer.

*April 25, 2012 by Anonymous*

**ap calculas**

derivative of (2x^3+5)cos2x^5

*March 25, 2013 by Rebecca*

**calculas **

If f(t) = square root of 7/t^5. Find f'(x) and f'(2)

*October 21, 2010 by sandy*

**Calculas**

Find the length of the curve y=ã(2x), from x=1 to x=4.

*July 24, 2012 by Drew*

**pre-calculas**

Can someone please help me?

*September 18, 2012 by ladybug*

**Calculas**

area between the curves y=4-x^2 and y=x-8

*December 21, 2014 by jessica*

**Calculas**

Evaluate the definite integral. S4 (-3x+4) dx 1

*November 10, 2015 by Please Help !!!*

**AP Calculas **

Does f(x)=(2x^3-2x)/x^3+x^2-4x-4 have any horizontal asymptotes? How can you tell?

*October 7, 2010 by Yishan shan*

**Calculas**

find the compute derivative of f(x)=sinh^2(5x)

*April 12, 2012 by ASB*

**pre-calculas**

rationalize the denominator: 5 + the sq. rt. of 3 ________________________ 4 + the sq. rt. of 3

*February 16, 2014 by Marina*

**calculas**

Please help don't understand how to solve it. 3xy-6x+2y^2 dx/dt=-6 x=2 y=-3 thank you

*June 28, 2016 by Barry*

**Calculas**

how to find the x intercepts for f(x) = 3x^3+7x^2+3x+1 please show your steps

*March 23, 2009 by Sandra*

**calculas**

The function f(x)= (8x-7)e^2x has one critical number. Find it

*November 5, 2009 by jenny*

**CALCULAS**

POLAR EQUATION OF INWARDLY SPIRALING SPIRAL

*February 13, 2010 by YAMNA*

**Pre Calculas**

verify the following 1+1/csc^2x-1=sec^2x

*November 2, 2011 by Raven*

**calculas**

let p=(1,1,1), Q=(2,3 5), and R=(-1,3,1). find the area A of thr triangle with vertices P,Q, and R

*December 11, 2012 by Anonymous*

**calculas**

Solve following equations ¡¼tan¡½^(2 ) x-5tanx=-6

*March 5, 2013 by preet*

**Calculas**

Integrate: Cos^7(2x) Explanation would be helpful

*February 16, 2015 by Pen*

**calculas**

Differentiate the explict funtion of 9x^2 + 64y^2 = 576

*March 27, 2016 by Sagar*

**Calculas**

F(X)=9 csc6(X) it is continous from -infity to infinity except what value?

*October 24, 2012 by Mohammad Al-Abdullah*

**calculas**

Write following equations in polar coordinate then graph them Y=4X

*March 5, 2013 by preet*

**Calculas**

Find the area of the region under the curve y = 12 e ^{3 x} between x = -2.6 to x =2.6

*March 8, 2014 by ryan*

**Calculas**

W= [ a , a+b ] (2x2 matrix) a-b , b a, b are element of R Show that W is a Subspace of M22?

*April 10, 2016 by Wong*

**calculas**

Question # 01 Solve the inequality and sketch the solution on a coordinate line.

*March 20, 2007 by khan*

**Calculas**

I stumble a question I cannot answer please help up. Find value of limit k for equation:

*May 9, 2010 by Mike*

**pre-calculas**

Use "completing the square" to find the zeros of the polynomial. =2x squared + 6x + 5 = 0

*February 16, 2014 by Marina*

**Calculas**

find the tangent line of the following function Y=2sinx + sinx^2 at the points Pi/6,5/4

*October 26, 2014 by Bashar*

**pre-calculas**

find the LCD and solve: x+3 12x + 4 1 - 2x ____ + _________ = _______ 3-x x squared - 9 x + 3

*February 16, 2014 by Marina*

**Pre Calculas**

Need help Give an example of an exponential function that goes through the point (0,4) .

*November 25, 2015 by Reese*

**Calculas**

Use the derivative of sinx and cosx to develop the derivatives of y=secx and y=tanx? Help would be much appreciated

*October 26, 2014 by Bashar*

**calculas**

Find the volume of the solid that is obtained when the region under the curve y=©ø¡îx+3 over the interval [5, 24] is revolved about x-axis.

*June 28, 2012 by raza*

**math- 165 calculas**

Find the horizontal asymptote of the graph of the function. (If an answer does not exist, enter DNE.) f(x) = 5x^2 + 1/ 7x^3 − 2x^2 + 5

*October 6, 2015 by akash*

**Calculas**

Find any critical numbers of the function. (Enter your answers as a comma-separated list.) g(t) = t sqrt6 − t , t < 13/3 I don't even know how to start out!

*February 19, 2012 by Mary*

**Applied calculas**

Let y=〖tan〗^(-1) x Rewrite it as an equation involving a trig function. Use implicit differentiation to determine an expression for y.

*April 8, 2013 by jack*

**calculas**

Find the equations for the tangent line and normal line to the curve for f(x)=(x^4)+(2e^x) at the point (0,2)?

*September 28, 2010 by john*

**Math ( calculas)**

find the intervals on which the curve y=x/(x+1)^2 is concave upward or concave downward.

*March 27, 2011 by Tina*

**Pre Calculas**

how would you varify the following sinx+sinx cot^2x=cscx

*November 2, 2011 by Raven*

**pre-calculas**

what is the function whose graph is the graph of y=ã+4, but is reflected about the the x-axis. y=

*September 19, 2012 by ladybug*

**calculas**

Consider the function f(x) = 7 xe^{-7.5 x}, 0<_x<_2. This function has an absolute minimum value equal to: which is attained at x=

*February 19, 2014 by ryan*

**Calculas**

Can someone walk me through the following questions: Partial Derivatives f(x,y) = x^7 -8y -3 find x and y f(x,y) = 7 / 5x + 4y, find x and y

*June 11, 2008 by Annette*

**pre-calculas**

write a function whose graph is the graph of y=x^2, but is shifted to the left 6 units.

*September 18, 2012 by ladybug*

**Calculas**

what is the velocity (in ft/s) of a sandbag 2.75 s after it is released from a hot-air balloon that is stationary in the air?

*December 21, 2014 by jessica*

**pre-calculas**

simplify the following complex fraction: x ____ -2 x-5 _____________________________________ x squared - 9x - 10 ____________________ x squared - 25

*February 16, 2014 by Marina*

**Calculas**

The slope of the tangent line to the graph of a function, h(t) is 7/2t The function passes through the point (5,3) Find h(4)

*March 2, 2014 by ryan*

**Calculas**

Evaluate lim x→0 10x/√(9+x)-√(9-x)

*March 16, 2013 by Radical Limits!*

**calculas**

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

*April 3, 2013 by mathews*

**calculas**

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

*April 3, 2013 by mathews*

**calculas**

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,

*April 3, 2013 by mathews*

**differential calculas**

Find the instantaneous velocity and acceleration at the given time for the straight-line motion described by the equation: s= (t+2)^4- (t+2)^(-2) at t=1 Round to one decimal place.

*November 26, 2012 by Preet*

**Calculas**

Can someone please walk me through the steps for the following Partial derivatives problems: f(x,y) = x^7 - 8y - 3, find x and y f(x,y) = 7 / 5x+4y, find x and y

*June 11, 2008 by Annette*

**high school calculas**

Find the (a) the local extrema, (b) the intervals on which the function is increasing, (c) the interval on which the function is decreasing h(x)=2/x

*November 6, 2008 by pipi*

**Calculas**

I stumble a question I cannot answer please help up. Find value of lower and upper limit of k for equation: (3x^3-5)/x^2 dx = 10 limit: -k , k

*May 9, 2010 by Mike*

**Calculas**

Given f(x)=x^3−2x+5/x+4 and f′(3)=a/b, where a and b are coprime positive integers, what is the value of a+b? Details and assumptions f′(x) denotes the derivative of f(x).

*March 16, 2013 by Derivative of f(x)*

**calculas**

Suppose that the box height is h = 2 in. and that it is constructed using 193 \text{in.}^2 of cardboard (i.e., AB = 193). Which values A and B maximize the volume?

*April 7, 2014 by MEMO*

**math- 165 calculas**

Find the horizontal asymptote of the graph of the function. (If an answer does not exist, enter DNE.) f(x) = x^3 − 3x^2 + 5x + 1/ x^2 − 5x + 3

*October 6, 2015 by akash*

**Pre-Calculas**

I a lighthouse is 75 feet tall and boat is out at sea 40 min away, how far is the boaat from the lighthouse. I'm stump on this problem..Help!

*September 1, 2011 by Carlos*

**calculas,math**

A cylindrical can is made from tin.If it can be contain liquid inside it then what is the parameter of design if we are oblige use the minimum amount of tin.

*December 2, 2013 by mash*

**Pre Calculas**

A man who can row in still water at 3 mph heads directly across a river flowing at 7 mph. At what speed does he drift downstream?

*May 12, 2015 by Jared*

**calculas 1**

Find the value(s) of c guaranteed by the Mean Value Theorem for Integrals for the function over the given interval. (Enter your answers as a comma-separated list.) f(x) = x^9, [0, 9]

*May 7, 2016 by Sam*

**differential calculas**

The angular displacement in radians is given by: θ=8√(t^2+2) Find the angular velocity and angular acceleration at t = 0.25 s

*November 26, 2012 by Preet*

**Calculas**

Johnny is designing a rectangular poster to contain 15 in^2 of printing with a 5-in margin at the top and bottom and a 3-in margin at each side. What overall dimensions will minimize the amount of paper used?

*December 7, 2014 by jessica*

**Pre Calculas**

Im having a little trouble help please? 1.Given the table below, evaluate the following: x -3 -2 -1 0 1 2 3 4 5 f(x) 10 20 30 40 50 60 70 80 90 g(x) -1 -2 -3 -4 -5 -6 -7 -8 -9 a. (3f+2g(1) b. (fog)(-1) 2. Express the following function, H(x) as a composition of two functions f...

*October 8, 2015 by ryan*

**Calculas**

Suppose that the radius r of a right circular cone of fixed height h = 30 cm is increasing at a rate 10 cm/s. How fast is the volume increasing when r = 15? Give your answer correct to two decimal places.

*October 12, 2010 by Jp*

**calculas**

A car braked at a constant deceleration of 45 ft / s2, producing a skid mark measuring 105 feet before coming to a stop. How fast was the car travelling when the brakes were first applied?

*December 4, 2011 by jordan*

**Calculas**

The profit obtained when x barbecues are sold is P(x) = 100 x − 3x^2 (lnx) dollars . Find the marginal profit when 4 are sold.

*April 4, 2014 by jake*

**Calculas **

Write the equation for a line in point slope form and in slope intercept form parallel to 3x-4y=12 and passes through (8,3).

*August 8, 2016 by Edgar Martinez*

**calculas**

if the length is decreasing at a rate of 2 in./min. while width is increasing at a rate of 2 in./min., what must be true about area of the rectangle

*December 7, 2010 by Anonymous*

**Calculas**

Do I just put in 3 for t? A ball is dropped from a tower 550 meters above the ground with position function s(t) = 4.9t^2 + 550. What is the velocity of the ball after 3 seconds?

*December 16, 2014 by John*

**Pre-calculas Math**

how to find the exact value of: cos(9*pi/12)*cos(5*pi/12)+sin(9*pi/12)*sin(5*pi/12)

*November 4, 2012 by Jon*

**calculas**

airplanes fly from left to right along the path y=1+(1/x)and can shoot their bullets in the tangent direction at creatures placed along the x-axis at x=1,2,3,4 and 5.determine whether a creature will be hit if the player shoots when the plane is at p(1,2)

*November 25, 2015 by khalid*

**Calculas HS**

a trucker handed in a ticket at the toll booth showing that in 2hours she had covered 159 mi on a toll road with speed limit 65mph. the trucker was cited for speeding. why?

*November 6, 2008 by dt*

**calculas**

consider the following. Function y = cos 3x point (pi/4, -square root of 2/2) (a) Find an equation of the tangent line to the graph of f at the given point. (Let x be the independent variable and y be the dependent variable.)

*March 26, 2016 by Sagar*

**Calculas HS**

show that the solution has exactly one solution in the interval x+ln(x+1)=0, 0<and equal to x <and equal to 3

*November 6, 2008 by elley*

**pre-calculas**

Find the function that is finally graphed after following transformations are applied to the graph of y=ãx in the order list 1. shift down 8 units 2. reflect the x-axis 3. reflect the y-axis

*September 18, 2012 by ladybug*

**pre-calculas**

Find the slant asymptote, if any, of the rational function. Do not graph the function. (Enter your answers as a comma-separated list of equations. If an answer does not exist, enter DNE.) f(x) = x2 − 2x + 15 _____________ x + 7

*March 10, 2013 by melanie*

**calculas**

find the perimeter of the rectangle with maximum area that can be inscribed in a semicircle of radius 2 ft. if two of its vertices are on the diameter of the semicircle and the other two are on the semicircle.

*December 7, 2010 by Anonymous*

**differential calculas**

A rocket fired at 275 m/s at 36o angle of elevation is described by: x= (275cos〖36〗^0 )t and y= (275sin〖36〗^o )t-4.9t^2 Find the velocity (magnitude and direction) at t = 8 s. Round to 1 decimal place.

*November 26, 2012 by Preet*

**calculas**

caluclas (intersection of three planes) HELP!!!? in the equations k is a real number 1.x-2y+z=4 2.x-y-z=3 3.x+y+kz=1 for what values of k does the system 1.have exactly one solution? 2.have an in finite number of solution?

*March 27, 2011 by ram*

**Calculas**

an open box is to be made from a square piece of cardboard whose sides are 19 inches long,by cutting squares of equal size from the corners and bending up the sides. Determine the size of the aquare that is to be cut out so that the volume may be a maximum.

*December 7, 2014 by jessica*

**calculas**

x and y are both variables that are differentiable with respect to t, but not to each other. however, there is a relationship between them: x^2=3y^2+7. we also know that x changes with respect to t at a steady rate of square root of 12 (dx/dt=x'= square root 12). when x is 4 ...

*December 7, 2010 by Anonymous*

**calculas**

2) A ball is hit at an angle of 36 degrees to the horizontal from 14 feet above the ground. If it hits the ground 26 feet away (in horizontal distance), what was the initial velocity? Assume there is no air resistance.

*April 6, 2011 by arun*

**Pre Calculas**

If you deposit $5,000 in an account that pays 5% interest compounded annually, how much money will you have in your account at the end of 15 years? Write an exponential function that represents this situation. I got 1,500,000 but im not sure if i did it right and im stuck

*November 25, 2015 by Ryan*

**Limit Calculas**

Evaluate lim->4 sin(2y)/tan(5y) Here is what I have so far. I am not sure the next steps. Can someone help me? 1. sin(2y)/(sin(5y)*cos(5y)) 2. (sin(2y)*cos(5y))/sin(5y)

*September 12, 2012 by Ryan*

**Pre-Calculas**

The voltage E of an alternating current electrical circuit can be represented by the sinusoidal function E = 220 cos( t), where E is the measured in volts and t is measured in seconds. How long does it take the alternating current to complete one full cycle?

*September 10, 2011 by Anonymous*

**differential calculas**

A point moves along the curve that has the parametric equations: x=9t^3- 〖6t〗^2 and y= 〖9t〗^3+27 x and y being in yards and t being in minutes. Find the magnitude and direction of the acceleration when t= 5/2. Round answers to 3 significant figures.

*November 26, 2012 by Preet*

**Pre Calculas**

True or false (logx)^2=2logx True or false in56/in7=in8 i got true for the first one and false on the second im sorry for posting today but i just need someone to check

*November 26, 2015 by Ryan*

**calculas**

If sin theta equals two third and zero degrees less than theta less than 90 degrees find cosine theta

*March 12, 2011 by joe*

**calculas**

find the volume of the solid generated by revolving the region about the given line. the region in the first quadrant bound above by the line y=1, below by the curve y=√(sin5x) ,and on the left by the y-axis, above the line y=-1

*December 18, 2012 by akela*

**calculas**

At time t=0 s, the radius of a circle is equal to 15 cm. The radius of the circle increases at a rate of 0.5 cm/s. The rate of change of area at t=20 s is equal to mπ cm^2/s, where m is a positive integer. What is the value of m?

*March 22, 2013 by stranger*

**calculas**

A landowner wants to fence in a rectangular area of 60000 square metres and divide it into three parts with two parallel fences both parallel to one side of the rectangle. Each part will have a different grazing crop for the herds. What is the shortest total length of fence ...

*February 19, 2014 by ryan*

**Calculas**

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so 4(6) would it be 6x-24???

*February 14, 2012 by Anonymous*

**calculas(URGENT..... PLEASE....)**

1) A region is bounded by the line y = x and the parabola y = x2 - 6x + 10. What is the volume of the solid generated by revolving the region about the x-axis? would u please give the explanation with a detailed steps to the answer because i am not able to reach the final ...

*April 12, 2011 by arun*

**calculas 1**

Use upper and lower sums to approximate the area of the region using the given number of subintervals (of equal width). (Round your answers to three decimal places.) y = 7/x number of interval between are 5 upper sum= lower sum=

*May 7, 2016 by Sam*

**calculas**

An unfenced rectangular plot of land with an area of 15000 square feet is to be split up into two rectangular gardens. Find the minimum amount of fencing required to define and separate these two gardens? Where do I begin? I just want to know how to set up the equation to ...

*November 30, 2015 by Seth*

**calculas **

If a ball is thrown vertically upward from the roof of 48 foot building with a velocity of 80 ft/sec, its height after t seconds is s(t)=48+80t–16t2. What is the maximum height the ball reaches? (my answer is 148). What is the velocity of the ball when it hits the ground (...

*October 21, 2010 by sandy*

**Calculas**

In the early 1960s, radioactive strontium-90 was released during atmospheric testing of nuclear weapons and got into the bones of people alive at the time. If the half-life of strontium-90 is 32 years, what fraction of the strontium-90 absorbed in 1965 remained in people's ...

*August 26, 2010 by Cratch*