Tuesday

December 1, 2015
Number of results: 37,681

**homework check**

which if the following statements is false? a. The points of a circle are coplanar b. Concentric circles intersect in exactally one point c. In are AB C Denotes that an arc of the circle has endpoints A and C and that passes thru B d. If a line and a circle are coplanar and ...
*April 15, 2012 by Courtney*

**Math**

Find an equation of the line containing the given pair of points. (-5,-2) and (-3,-1). The equation of the line in slope-intercept form is y=. Here is what I came up wiyh: y=1/2x-1/2. Is this correct? I am confused on this problem. Could someone please help? Thanks.
*March 26, 2010 by B.B.*

**math**

Find the product and enter the real and imaginary parts below. Note that you do not need to type in the since it is already given to you. Simplify your square roots as much as possible. sqrt-27((sqrt-5)-(sqrt-11))
*September 13, 2011 by john*

**Physics, help!!**

How do I get the equation T=2pi(sqrt(m/k)) to the linear equation y=mx+b?
*February 4, 2013 by Hannah*

**Algebra**

i am having problems understanding.... i don't know how to put it so i will just put what the problem is Write the slope-intercept form of an equation of the line that passes through the given point and is parallel to the graph of each equation 13. (2,-7) y= x-2 i know that 2 ...
*October 23, 2012 by Emmy*

**Calculus**

Find the slope of the tangent line to the graph of f at any given point f(x) = -2x + 6 at (2,2)
*December 18, 2007 by Kelly*

**math urgent!**

find the eq to the tangent line to the curve y=x^3 g(x) at x=1 if g(1)=2 f(1)=3 f'(1)=1 g'(1)=-2 i cant understand how the answer is y=4x-2
*May 15, 2008 by sam*

**calculus**

Show that the curve given below has no tangent line with slope m1, where: y = 4 x^3 + 8 x - 6 m1 = 7
*November 3, 2008 by BEN*

**12th grade calculus**

let f(x)=x^2 1. show that the line tangent to the graph of f at the point (1,1)is y=2x-1
*November 16, 2008 by dt*

**calculus**

find the point(s) on the graph of y = (2x4 + 1)(x - 5) where the tangent line slope is 1.
*June 16, 2009 by lana*

**calculus**

consider the function f(x)=2x^2 +1. its tangent line at x=2 goes through the points (2,y1) and (-1,y2) where y1=?, y2=?
*September 28, 2010 by Jenny*

**calculus**

consider the function f(x)=2x^2 +1. its tangent line at x=2 goes through the points (2,y1) and (-1,y2) where y1=?, y2=?
*September 28, 2010 by Jenny*

**calculus**

Find the equations for the lines tangent to the ellipse 4x^2+y^2=72 that are perpendicular to the line x+2y+3=0
*October 10, 2010 by Anonymous*

**math**

how do you show that line 3x+y-2=0 is a tangent of the curve y=(4x-3)(x-2) and how to find the point of contact??
*October 17, 2010 by Jack*

**Calculus Help **

Determine the point at which the graph of the function has a horizontal tangent line. f(x) = (9x^2)/(x^2+6)
*October 27, 2010 by Sam *

**Calculus**

let f(x)=x*e^x For what value of x is the slope of the line tangent to the graph of function f at [x,f(x)] equal to 1/2?
*February 3, 2011 by Anna*

**Calculus - Verify?**

Find the slope of the tangent line to the curve (a lemniscate) 2(x^2+y^2)^2 = 25(x^2-y^2) it is at pt (3,1)
*February 20, 2011 by Aric*

**math**

Determine the points on the curve y=x^2(x^3-x)^2 where the tangent line is horizontal. Thx!
*March 20, 2011 by hast*

**math**

using limits...finding the tangent line of the square root of x when x=2
*September 22, 2011 by tiffany *

**Calculus**

Find all points on the curve where the tangent line is horizontal y = (x^6/6) - (x^2/2) + 1
*October 13, 2011 by Blue*

**calculus**

find equations of the tangent lines to the curve y=(x-48)/(x+48) that are parallel to the line y=6x+6
*October 30, 2011 by jihang*

**calculus**

given f(x)=(x). find the distance of the point P(2,5) from the line tangent to the functions at x=4.
*December 7, 2011 by mike*

**calculus**

how do I find the equations for the lines tangent to the curve y 4 + x y= ------ 4 - x which are parallel to the line y = 2x 32.
*March 22, 2012 by Anonymous*

**cal**

determine any values of x for which a tangent line to the curve f(x)=1/x will have a slope of -4
*September 30, 2012 by jump*

**Calculus**

Find the value of c where the line l tangent to the graph of y=2.5*5^x at (0,2.5) intersects the x-axis
*October 1, 2012 by Marlanea*

**Calculus**

Find the value of c where the line l tangent to the graph of y=2.5*5^x at (0,2.5) intersects the x-axis
*October 1, 2012 by Marlanea*

**calculus**

don't understand at all... find the slope of the tangent line to the curve y=xe^x at (1,e)
*October 24, 2012 by dino*

**math**

Use the tangent line approximation to approximate the value of ln(1.004)
*November 19, 2012 by Melissa*

**calculus**

Use the tangent line approximation to approximate the value of ln(1008)
*November 19, 2012 by paul*

**math**

Find the values of a,b, and c if the parabola y=a(x^2)+bx+c is tangent to the line y=-2x+3 at (2,-1) and has a critical point when x=3
*November 22, 2012 by mike*

**mts 106**

Find the gradient at the point (1,1) of the tangent line to the curve x^2+y^2-3x+4y-3=0.
*May 18, 2013 by tunde*

**Calculus**

Find the slope of the tangent line to the curve (a lemniscate) 2(x^2+y^2)^2 = 25(x^2-y^2) at point (-3,-1).
*October 8, 2013 by Nathan*

**math**

let f(x) = x^3 +1 a.find the points on the graph of f where the slope of the tangent line is equal 12
*December 1, 2013 by Tee*

**calculus**

Find the slope of the tangent line to the graph y = x-3 at the point (0.5, 8). Answer -48 -12 4 16
*February 23, 2014 by shira*

**math class**

Find the slope of the tangent line to the graph y = x^-3 at the point (0.5, 8). -48 -12 4 16
*February 23, 2014 by liana*

**calculus**

Find the slope of the tangent line to the curve (2x+4y)^1/2+(2xy)^1/2=13.4 at the point (6,5).
*October 7, 2014 by Hailey*

**Calculus**

1. If the tangent line to y=f(x) at (4,3) passed through the point (0,2), find f(4) and f'(4). My answer: f(4)=3 f'(4)=1/4
*October 17, 2014 by Anonymous*

**AP calculus**

Find values for x and/or y on the graph of x^2-2y^2+9x+8y-276=0 for which there is a vertical tangent line
*November 30, 2014 by DJjazzyjazz*

**AP Calculus**

Find all points on the graph of f(x)=-x^3+3x^2-2 where there is a horizontal tangent line.
*November 30, 2014 by Sarah*

**Math**

For what value of b will the line y=-2x+b be tangent to the parabola y=3x^2+4x-1? Show work-2 marks
*January 15, 2015 by Alex*

**math**

For what value of b will the line y=-2x+b be tangent to the parabola y=3x^2+4x-1 ? (Show your work - 2 marks)
*January 23, 2015 by Alex*

**math**

For what value of b will the line y=-2x+b be tangent to the parabola y=3x^2+4x-1 ? (Show your work - 2 marks)
*January 23, 2015 by Alex*

**Calc.**

Evaluate the indefinite integral. Please check my work? Not sure if I am doing this correctly. S= integral symbol S x^3*sqrt(x^2 + 1) dx u = x^2+1 x^2= u - 1 du = 2xdx du/2 = xdx 1/2 S x^2 * x sqrt (x^2 + 1) du 1/2 S (u - 1) * sqrt (u) du multiply square root of u and (u - 1) ...
*January 27, 2011 by CMM*

**math,correction**

is this correct: solve: 5(x-2)^2=3 My answer: (10 +/- sqrt 15)/(5) looks like you expanded, then used the formula and you got the right answer properly reduced. I think you are getting this!!! I don't want to confuse you but I would have done the following: (x-2)^2 = 3/5 x-2...
*April 19, 2007 by jasmine20*

**maths**

Choose the option that gives the solution of the initial-value problem dy dx=(1 + 2 cos2x^2)/y (y > 0), y= 1 when x = 0. Options A y = 1+ 2sin^2 x B y = (1 + 2 sin x)^2 C y = (4x + cos(2x))^2 D y = 4x + cos^2 x E y =sqrt(4x + cos(2x) F y =sqrt(1 + 4x + sin(2x)) G y =1/(sqrt...
*May 11, 2011 by albert*

**math help & correction**

Problem #1 Is this correct or wrong? Find the slope of the line passing through the points(-1, -1)and(-1, 2). Write the equation of the line. For this one I KEEP GETTING Y= - (3)/(2)x-2.5 Problem #2 Find the y-intecept and slope of 7x+9y=72 My answer: Slope is: - (9)/(8) y-...
*March 31, 2007 by jacky*

**math**

what way would the line face with the linear equation y=-1/3x+5? A)A line going through the 5 up to the right B)A line going down from 5 c)A line going thru -5 and up D)A line going through positive 1 and to the left. Is it d
*May 23, 2014 by Gwen*

**Math**

1. The curve y=10/2x+1 -2 intersects the x-axis at A. The tangent to the curve at A intersects the y-axis at C. (i) Show that the equation of AC is 5y+4x=8 (ii) Find the distance of AC 2. The equation of a curve is y=1/6(2x-3)^3-4x (i) Find dy/dx (ii) Find the equation of the ...
*January 14, 2013 by Stephen*

**algebra**

The equation y = 6x 50 describes the amount of money a class of students might earn from candy bar sales. What are the slope and y-intercept of this line? In the general linear equation y = mx + b, m is the slope and b is the y-intercept. The y intercept is the value of y ...
*May 13, 2007 by stressed*

**Algebra - equation**

What equation represents a line parallel to the line given by y-3x=6?
*May 18, 2009 by randi*

**Algebra**

What is the equation of the line that passes through (-6,-2) and is parallel it the line with the equation x=4
*April 8, 2015 by Jay*

**algebra**

identify the equation of the line through (-1,-4) and parallel to y=-6x+4 i got y=6x+10 Isn't the slope of the original line from y=-6x+4 equal to -6. Your solution has a slope of +6. Are those two lines parallel? i have to identify the equation of a line passing through ...
*December 14, 2006 by eddie*

**geometry**

I would love for someone to check my work on the seven problems that I did. I would be eternally grateful. I am going to list my problems and answers. Even if you only want to check one of them, that would be great. 1. Write an equation of a line in point slope form that has a...
*August 2, 2015 by Savannah*

**Geometry equation**

I do not understand how to work a problem or equation out for geometry. The equation refers to two parrellel lines that have a transversal line running diagonal through each one. The exterior anglebottom left part of the top parrellel line, measures at 52 degrees. how do I ...
*May 11, 2010 by BWB*

**college algebra**

Find the product and enter the real and imaginary parts below. Note that you do not need to type in the since it is already given to you. Simplify your square roots as much as possible. sqrt-27((sqrt-5)-(sqrt-11))
*September 13, 2011 by john*

**Maths**

Line L1 has equation 2x -3y+12=0 Gradient of L1 is 2/3x The line L1 crosses the x axis at the point A and the y axis at the point B. The line L2 is perpendicular to L1 and passes through B. A) find and equation of L2 The line L2 crosses the x axis at the point C B) find the ...
*October 9, 2015 by Anonymous *

**Math**

If line g passes through point (2, 2) and is perpendicular to the line h, then what is the equation of line g?
*January 24, 2011 by Ant*

**geometry**

Write an equation of the line parallel to Line AB that contains point C. Line AB: y = -5x + 12; C(-2, 1)
*October 12, 2014 by Hollister*

**Math**

Use differentials (or equivalently, a linear approximation) to approximate sin(27 degrees) as follows: Let f(x) = sin(x) and find the equation of the tangent line to f(x) at a nice point near 27 degrees. Then use this to approximate sin(27 degrees).
*December 12, 2014 by Anonymous*

**eigenvalues/eigenvectors**

The matrix; [ 1 -2 0] [-2 -1 1] [ 0 0 -1] I have found the eigenvalues to be -1 and +/- 5^1/2 but am having problems putting the root 5 values a eigenvectors. I know I sub it back into the matrix { x-1 -2 0 } { -2 x+1 1 } { 0 0 x+1} but then it gets messy. Can someone finish ...
*March 10, 2007 by Rom*

**inverse**

find f^-1 (x). (this is asking me to find the inverse) f(x) = -(x-2)^2, x <= 2 how do I solve this problem? find f^-1 (x). (this is asking me to find the inverse) f(x) = -(x-2)^2, x <= 2 how do I solve this problem?>> If f(x)=-(x-2)^2 x<-2, then let y=f(x) - y...
*July 11, 2006 by kristie*

**geo**

A line contains the points (8, 9) and (12, 7). Using point-slope form, write the equation of the line that is parallel to the given line and that passes through (5, 15).
*August 7, 2014 by me*

**chem**

λ for one line of the hydrogen spectrum is .4118 x 10-4 cm. Use this value in the Rydberg equation to calculate the RH value using n1 = 2, and n2 = 5. change the line spectrum to meters you know the equation is Et= Ef-Ei (i think is the equation they want you to use, i ...
*October 2, 2006 by Mary*

**Math **

The quantity sqrt(45)- 2sqrt(5) +sqrt(360/2) can be expressed as sqrt(N), where N is an integer. Find N. * the whole fraction 360/2 is squarerooted.
*December 5, 2014 by Matt *

**Math/Physics**

For a velocity-time graph, what does the "tangent line of the curve" represent?
*July 13, 2008 by Matt*

**calculus**

Find the slope of the tangent line to the graph of the function at the given point. g(x) = 3 x + 4, (-4, 1)
*March 2, 2010 by B*

**Math**

Use the fact that (125)^1/3 = 5 and the tangent line approximation to estimate (123)^1/3
*March 13, 2010 by Chris*

**calculus**

Find the number c if the line y=x is to be tangent to the graph of f(x)=x^4+c. what are the coordinates of the points of tangency?
*October 18, 2010 by Dom*

**Calculus**

Find the x-coordinates of all points on the graph of y=x^3 - 4x^2 + 5x at which the tangent line is horizontal.
*November 16, 2010 by Drew*

**Math**

What are is the 4 step process when finding the slope of the tangent line at any given point?
*February 8, 2011 by Anonymous*

**Calculus**

What is the 4 step process when finding the slope of the tangent line at any given point?
*February 11, 2011 by Anonymous*

**calculus**

f(x)=3-5x , (-1,8) find the slope of the tangent line to the graph of the function at the given point
*February 11, 2011 by art*

**math**

How do I find the slope of the line tangent to the graph of each function at the given points? y=x^2+2x-8
*March 22, 2011 by Tracie*

**Calculus**

Determine the point(s) (if any) at which the graph of the function has a horizontal tangent line for y=(3^1/2)x+2cos(x), 0x<2
*October 3, 2011 by Susana*

**Calculus**

Find the slope of the tangent line to the curve 2(x^2 + y^2)^2 = 25(x^2 - y^2) at the point (3,1). Thank you very much for your help.
*November 5, 2011 by Jake UCD 11/5/11*

**Calculus**

Find the positive value of x where fx=x3+2x1/3 has a horizontal tangent line. Answer =
*February 10, 2012 by TG*

**MATH**

Find the slope of the tangent line to the graph of the function at the given point. g(x) = 7/2x + 9, (-2, 2)
*February 13, 2012 by Anonymous*

**MATH**

Find the slope of the tangent line to the graph of the function at the given point. g(x) = 7/2x + 9, (-2, 2)
*February 13, 2012 by Anonymous*

**Math**

Find the points at which the relation 3x^2-2xy+y^2=24 has a vertical or horizontal tangent line.
*April 2, 2012 by Mary*

**trig**

find the values of x between 0 and 2 pi where the tangent line to the graph of y = sinxcosx is horizontal
*May 13, 2012 by Jom*

**calculus**

what is the slope of the tangent line passing through the point (2,3) of the graph of this function? f(x)=x^2+2x-5 A 1 B 2 C 3 D 4 E 6
*November 26, 2012 by Disha*

**maths**

Find parametric equations of the line that is tangent to the parabola y = x^2 at the point (−2, 4).
*December 11, 2012 by ramesh*

**Calculus**

Use a tangent line approximation at x=0 to estimate the value of sin(-0.1). I got 0.1
*March 26, 2014 by Anonymous*

**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*

**calculus**

Help! I have a test tommorow! I don't understand (b), (c), (e), and (g). The answers are listed following the each question. Here's a discription of the graph: There is a graph of a function f consists of a semi circle (-3 to 1 faced downward on the x-axis) and two line ...
*October 26, 2007 by Anonymous*

**Math Linear Equations**

Two lines are drawn on a co-ordinate axis. The equation of the first line is y=-2,and the equation of the other line is y=3x+1. What are the co-ordinates of their intersection point? I have been on this for hours and can't figure out how to do this. Please help. Thank you
*January 2, 2015 by Cherie*

**Algebra 2 ..**

Solve the equation by completing the square. x^2-2=9x My answer: x=9/2+or- the sqrt. of 22.25 (but when I checked my answer the actual answer was x=9+or - the sqrt. of 89 and then all over 2) Please explain why my answer is different from the actual answer.
*December 25, 2012 by Anonymous*

**Algebra 2 ..**

Solve the equation by completing the square. 3x^2+4x=1 My answer: x=-2+or- sqrt. of 39 all over 3. When I checked my answer how come it was x=-2+or-sqrt. of 7 all over 3?
*December 25, 2012 by Anonymous*

**Pre-Calculus Questions**

Hi! Can someone help me with these? Thanks! 1.) Determine the slope and the y-intercept of the equation of the line passing through the points (-5, 3) and (1, -3). Write the equation of the line in slope intercept form. 2.) Determine the x- and y- intercepts and use them to ...
*September 19, 2014 by Lanie*

**math**

thanks for the help but i was wondering (16 square root of x-3) times(square root of x-1) is equal to 16x-19 square root of x then plus 3 No, it is not. 16 (sqrt (x-3) ) (sqrt (x-1)) if that is your problem. It is hard to determine from your text. Use parenthesis please. 16 (...
*January 11, 2007 by jon*

**calculus**

Find the length of the arc formed by y = (1/8)(4x^2-2ln(x)) from x=4 to x=8. I found the derivative of the function and got y'= x-(1/4x) Where I'm lost now is after plugging it into the arc length equation: integral of sqrt(1+(x-(1/4x))^2). Squaring the derivative yields me ...
*August 24, 2008 by Arc Length*

**math,correction**

Can someone help me with these...plz Simplify 2radical (12) + 4 radical (27) if i simplify radical (12) i get 2radical (3) then if i simplify radical (27) i get 3radical (3). so now i don't know if i'm doing this correctly or how to set it up... 2 sqrt 12 + 4 sqrt 27 4 sqrt 3...
*March 29, 2007 by jasmine20*

**Calculus**

integral 0 to sqrt(3) dx/sqrt(4-x^2) I don't understand why the answer is pi/6. I get pi/3. Thanks for the help! Work: u=x/2 du=1/2dx 2du=dx 2/2sqrt(1-u^2) sin^-1(x/2) sin^-1(sqrt(3)/2)= pi/3
*June 4, 2008 by Anonymous*

**Algebra 2**

Simplify each expression. 1+sqrt(3) ______________ sqrt(3)-sqrt(2) *this is a division radical expression please show work!!
*February 7, 2015 by Alex*

**Calculus (Please check my work!)**

Suppose that y = f(x) = x^2 - 4x + 4. Then on any interval where the inverse function y = f-1(x) exists, thederivative of y = f-1(x) with respect to x is: (Hint: x^2 - 4x + 4 can be factored and rewritten as "something" squared.) Work thus far: Okay, so I know that I can ...
*March 15, 2012 by Anonymous*

**algebra solving log equations**

n sqrt(x-8)= 5 I would like help to solve this what i did was to take away the square root i squared both sides coming up with (ln sqrt(x-8))^2= (5)^2 ln(x-8)=25 am i alowed to do this with ln in the equation? then i subtract 8 from both sides ln x = 17 e^(ln x)= e^17 e ...
*October 30, 2013 by Marcos*

**algebra**

write the equation of a line parallel to the given line but passing through the given point y=x+4;(-7,1) discuss the steps necessary to carry out each activity. describe what each line looks like in relation to the original given line
*February 5, 2013 by Anonymous*

**Calculus I**

Find the point on the curve y=x^2 closest to point (0,1) Here's what I have: Sqrt {(x-0)^2 + ((x^2)-1)} Sqrt {((x^2) + (x^2)-1} d= sqrt (x^4)-1 y= (x^4)-1 Fprime(x) = 4x^3 Domain = ARN Critical Number x= 0 Any help or comments would help alot. Thanks!
*November 2, 2007 by Mandy*

**Physics**

suppose that the separation between speakers A and B is 5.80 m and the speakers are vibrating in phase. They are playing identical 135 Hz tones, and the speed of sound is 343 m/s. What is the largest possible distance between speaker B and the observer at C, such that he ...
*May 1, 2007 by Mary*

**calculus BC slope**

consider the curve in xy-plane by x=e^t and y=te^(-t) for t is greater or equal to o. the slope of the line tangent to the curve at the point where x=3. all the answer choices are decimal points. a is 20.086, b is .342, c is -.005, d is -.011 and e is -.033 so what i did is ...
*April 22, 2007 by Anonymous*