March 24, 2017

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Can you show me how to find the rectangular equation of r=2costheta + 3 sin theta All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you
October 3, 2011 by Leah

Studying for Calc
I have a quiz on derivatives coming up and I really want to do well, but i'm not sure how to go about studying calc. i have no trouble studying for other subjects, but i'm doing poorly in calc and i need to make some changes in my study habits. any suggestions? i usually work ...
October 7, 2008 by Elizabeth

August 9, 2010 by MTHOMBENI BAFANA

Which set of parametric equations corresponds to this rectangular equation? y=2x-(x^2 / 10) A. x=4t, y=4t-(t^2 /10) B. x=2t, y=8t-(4t^2/10) C. x=2t, y=4t-(4t^2/10) D. x=.5t, y=2t-(t^2/10) E. x=t, y=t-(t^2/10)
April 17, 2013 by Chris Math Hw Help

The total area enclosed by the graphs of y=10x^2-x^3+x y=x^2+19x Please Please help me solve this. I have done it amny times, but getting it wrong
January 25, 2011 by John

Can someone help me with this calc problem? lim as x->0 (tan^3 (2x))/(x^3)
January 8, 2009 by Nick

help chem!:/
a) Calc. PH of 0.010 M HF and 0.030 M KF e) calc. PH Zn(OH)2 in wAter
March 15, 2012 by ALISON

pre calc
Can someone please help me f(x)=1/3 square root 1-2x and g(x)= (x-2)/x. Find and simplify (g of g)(3)/(g of f)(-24). The answer I got it -24/7 and i Am unsure If it is correct. Please show all work Thank you
February 5, 2017 by Marie

Pre Calc
Does this: sqrt 3x-4=(x-4)^2-3 Multiply out to: x^4-16x^3+90^2-211x+173 I then need to put it in the graphing calc and see what the roots are.
September 10, 2009 by muffy

Ap calc
If y= e^x - e^-x / e^x + e^-x , then y'= Please help
January 8, 2015 by Lynds

calculus (limits)
lim h>0 sqrt(1+h)-1/h not sure how to factor this; not allowed to use L'Hopital's Rule. (that isn't taught at my school until Calc II & I'm in Calc I).
January 22, 2011 by John

Pre Calc
please h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 0 2 2 5 7 6 7
December 7, 2009 by Jo

Pre Calc
Simplify (n+1)!/(n-1)! Help please?
March 15, 2009 by MW

Pre calc
Please finish y+7=6/7x-30/7
January 25, 2013 by Joe

Help please Find f(2) and f(a+h) when f(x)=3x^2+2x+4
September 27, 2014 by Anonymous

help please For f(x)=3x+1 and g(x)=x^2-6 find (f-g)(x) A. x^2-3x-7 B. 7+3x-x^2 C. 3x^2-17 D. -x^2+3x-5
September 29, 2014 by Anonymous

pre-calc HELP PLEASE
solve using identities for all angles (dont use multiple angle method)show work please cuz i am so confused. 2sin2x-3sinx=0
April 24, 2012 by Kimberly

find the limit as t approaches x of ((1/t)-(1/9))-(t-9).. help please thank you
February 10, 2013 by Anonymous

integrate 1/(1+(e^-x)) please provide steps
May 1, 2013 by Anonymous

Calc Help Please
if 2x^2+2x+ xy =2 and y(2)=-5 find y'(2) by implicit differentiation
July 28, 2013 by Anonymous

The linear approximation at x = 0 to f(x) = \sqrt { 3 + 3 x } is y = Please Help!
August 5, 2013 by Anonymous

Help please!! For pre-calc
Logx16=-2 how do you solve this?
December 10, 2013 by Anonymous

Calc please help
Find the derivative of f(x) (csc(2x^2+1)^4
June 26, 2014 by Sarah

Please help with implicit differentiation. Find dy/dx for 4x^3+x^2y-xy^3 = -4
October 16, 2014 by Jake

ap calc
If y= (e^x-e^-x)/(e^x+e^-x), then y'= Please help i know how to get the derivative i just can not simplify.
January 6, 2015 by anonymous

pr calc 11
(x+2)^2-(x+2)-42 Factor this equation please someone?
March 30, 2016 by AMANSANDHUWILLDIE!!!

Pre-Calc-Please check my answer
Please help-I'm stuck really bad Thank you for any help you can provide What are the roots of the equation x^2 -4x + 3 = 0 x^2 - 4x = 3 x^2 +2(-2)x + -2^2 = -3 = -2^2 x^2 + -4x + 4 = 1 (x + -2)^2 = 1 qrt (x+-2)^2 = sqrt 1 x+-2 = plus or minus 1 therefore x=1 x=3 roots are 1 and 3
September 6, 2011 by Sheila

Calc or Pre calc
I am having trouble doing this problem. I know how to do indefinate integrals, but I don't know how to do definate integrals. Can you show me how to do this. Evaluate 5 (x^3-2x)dx 2
May 14, 2008 by jennifer

Please someone help with my pre calc question!
February 11, 2013 by Anthony

Integrate 1/(ln(x)); f(e^e)=1 please provide step! confused because of f(e^e)!
May 8, 2013 by Sunny

Calc please help
Limit as x approaches zero (1/x-1/tanx)
June 26, 2014 by Sarah

Help Please Find (fog)(2) and (f+g)(2) when f(x)= 1/x and g(x)=4x+9
September 28, 2014 by Anonymous

ap calc
If f(x)=e^x, g(x)=sin(x), and h(x)=f(g(x)), then h'(pi/2)=? Please help I have no idea how to solve
December 21, 2014 by Anonymous

Please solve: 5sin2x + 3sinx - 1 = 0
January 10, 2016 by Jim

(t^3)+(t^2)-16t+12 for 0<=t<=8 describe the particles motion when t=2 can u please tell me about it's maximum and its acceleration whether it speeding up, or slowing down, or whether its constant I know that it has a max of -8 but i don't know how they got it please help.
December 3, 2014 by Darcy

If (a,-3) is a point on the graph of y=x^2+4x, what is the value of a? so far i have -3=x^2+4x i can do the problem on my graphing calc but we can't use a graphing calc on the test so i need to know how to do it by hand. what do i do next?
January 20, 2010 by Karen

integral (x^2+x-1)/(x+1) dx can you please explain maybe not step by step but not just the answer please thanks
January 24, 2013 by kmac

Can you someone please help me with this question??? Simplify cot(x + pi)
May 22, 2011 by Emily

cosx/(1+secx) Please help me simplify this expression.
November 1, 2012 by Gaby

Help please State the x and y-intercepts for each function. f(x)= -x^3+4x
November 10, 2014 by Anonymous

I'm stuck on a pre-calc problem. I need to find y as a function of x, where the constant c is a positive number for In(y-1)+In(y+1)= -x+c express your question as ln[(y-1)(y+1)] = -x+c change that to exponential form e^(-x+c) = (y-1)(y+1) e^(-x+c) = y^2 - 1 y^2 = e^(-x+c) + 1 ...
May 9, 2007 by Sarah

Suppose that y′=ky, y(0)=7, and y′(0)=4. What is y as a function of t ? PLEASE EXPLAIN
June 20, 2016 by Sarah

calc: avg value
Find the average value of the function "f(x) = x^2 sqrt(1+x^3)" on the interval [0,2]. and this is what i did.. please check for mistakes. thanks :D f(x) = x^2 sqrt(1+x^3), [0,2] f ave = (1/(b-a))*inegral of a to b for: f(x) dx f ave = (1/(2-0))*integral of 0 to 2 for: x^2 ...
July 2, 2007 by COFFEE

What is the equation of the tangent line of the one-family of curve x^2 + y^2 = 25 at P(4, 3) ?? help please
December 14, 2009 by Janice

pre calc
Simplify- (x^2+2x)/(x^2-x) *I got x(x+2) for the numerator and I couldn't get the denominator, but it was wrong help please
February 23, 2010 by Karissa

AP Calc
PLEASE ANSWER! PLEASEEEE! what is the antiderivative of sin (x + (1/x)) THANK YOU TIMES A MILLION!!!!
January 3, 2011 by APpreciative student

Can someone please show me how to find the integral of sin squared x?
February 27, 2011 by lo

please help me solve this partial-fraction decomposition! 12x-57/(x-3)(x-10)
May 15, 2011 by esora

cos x+sec x=2 if you could please show all work
November 20, 2012 by Haley

Please help stuck on this one question Find (fog)(2) and (f+g)(2) when f(x)= 1/x and g(x)=4x+9
September 28, 2014 by Anonymous

limx->0 (3^x-6^x)/x please help here do not really know where to even start
June 2, 2016 by Anonymous

Pre Calc
In triangle ABC, b=14, c=15, and cos a= 3/5. Find a)side a b) Sin B Help please?
April 13, 2009 by MW

Determine the solution. x^2=|x|algebraically I have no idea how to proceed with this. Can you please help?
September 26, 2009 by MUFFY

Please help me with this problem-I'm stuck (x-2)/(x+2) = (x+10)/x I'm not even sure where to start-Thanks for any help you can provide
September 18, 2011 by Josh

Calc 1
I need help solving for this final problem to complete my assigment. Please help! Solve for x: ln(x^4)-ln(x^2)=2
September 24, 2012 by arcos15

if f'(x)=3x^2-2x+1 and the graph of f(x) contains the point (2,2). find f(x). Please help I know I need to use integration
January 19, 2015 by Anonymous

Calc Help Please
Evaluate the integral. integral 1/((x-2)(x+2)) Note: Use an upper-case "C" for the constant of integration. I keep getting 1/4[log(2-x)-log(x+2)]+C and the system is saying its wrong... Please help!
May 16, 2014 by Josh

AP CAlc. AB Please helppp!!
f(x)=|x|+1 Let A(r) be the enclosed by the x axis, the line x=-2, the graph of the function f, and the line x=r for any r=>-2 A) Write A(r) as a piecewise function with its joints at r=0 Please walk me through each step i am really confused!!
September 8, 2014 by Lily

Find the domain. f(x)= 3 - 1/2x if x less than or equal to 2 = 2x - 5 if x > 2 Please help... an explanation would be wonderful, so I can understand how to do this.
September 14, 2010 by Chelsea

find the solutions of the equation that are in the interval [0,2pi) 2-cos^2x=4sin^2(1/2x)
November 4, 2010 by Hayli

Can someone show me how to do this please. I am stuck. find a number x such that e^2x – 12e^x =13
December 9, 2010 by Roy

x^(-1/7)=(1/2) Please help the example given was x^(-1/7)=(1/5) so that solved x=78,125. but i have no idea what to do thanks!
April 5, 2012 by Rochelle F

I have to solve these using matrices by hand. Can someone please help me? 2x-3y-2z=4 (1/4)x-(2/5)y+(3/4)z=(-1/3) -2x+1.3y-3z=5 Thank you so much! :)
December 3, 2012 by Tori

ap calc
the graph of y= (ax+b)/(x-1)(x-4) has a horizontal tangent at the point (2,-1. Find a ANd B. Please help I have ne idea where to start
October 8, 2014 by Anonymous

Help me please. Solve the equation: (x-3)(x+2)=0 Enter the solution with the lowest value.
October 16, 2014 by Anonymous

Calc. Help Please.
Find the value of the definite integral using sums, not antiderivatives: int= integral sign int((x + 2)/(x^(3/2)),x= 16..25)dx Please help... even just showing me how to get started would be greatly appreciated.
April 5, 2011 by CM

differentiate y=ln(x^5-e^x) Please show the steps in solving change it to y=ln u dy/dx= dy/du * du/dx and of course, dy/du= 1/u I will be happy to critique your work. 1/4x * 4/4x = 4/x Is this correct?
April 11, 2007 by quita

How do I find the derivative of x^ (1/(x-1)) is it (1/(x-1)) x^[1-(1/(x-1))] * (-1/ (x-1)^2) ?? If not, can you please write out what rule I should use? Thank you very much!
September 18, 2010 by APpreciate student

Use a linear approximation (or differentials) to estimate the given number. Tan 44 degrees Please help.
November 15, 2010 by Chelsea

ex: Find the indicated derivative using implicit differentiation. e^x/y^2= 8 + e^y; dy/dx Please I need help and thank you very much!
October 2, 2011 by Ed

Math, Pre Calc
Given that (+-2) and i are the roots of a 4th degree polynomical, find the equation. Please help! Thank you:)
September 5, 2012 by Nikki

Helpp please State the domain and range of each of the following functions: 1. f(x)=1/(x+3) 2. g(x)=√x+6 3. h(x)=x^3+2x+5
September 28, 2014 by Anonymous

Help me please Is the given linear expression a factor of the polynomial? Show work. f(x)=2x^3+x^2-5x+2; x+2
October 31, 2014 by Anonymous

Help me please. List all possible rational zeros for the polynomial function. p(x)=3x^3-2x^2-5x-2
November 7, 2014 by Anonymous

ap calc
the curve y=ax+ b/x has a relative minimum at the point (1,4). find the values of a and b. please help. I have no idea how to solve this.
November 9, 2014 by Anonymous

the curve y=ax+ b/x has a relative minimum at the point (1,4). find the values of a and b. please help. I have no idea how to solve this.
November 9, 2014 by Anonymous

ap calc
For the curve f(x)=xln(x)+ (1-x)ln(1-x), find the value of x in the interval 0<x<1 where f(x) has a minimum. Please help I have no idea how to solve.
December 21, 2014 by Anonymous

What are the asymptotes of the hyperbola (x+1)^2/4 - (y-2)^2/1 =1 I'm homeschooled, so the concept is hard to grasp. Show steps please.
March 6, 2015 by Julissa

What are the vertices of the hyperbola x^2/9 - y^2/4=1 I'm not sure of how to start or what equation to use. Show steps please.
March 6, 2015 by Julissa

Find an equation of the tangent line to the curve 2(x2+y2)2=25(x2−y2) (a lemniscate) at the point (3,1). Please help.
May 26, 2016 by Linda

Solve for t if 0<t<2pi Note: both are less than or equal to . Please help!! I am not sure what I should do.
October 20, 2016 by Mary

Calculate the period of sin(x), tan(x), sin2(x) and tan2(x). Please explain throughly.
November 29, 2016 by Anonymous11

Hi, How do I improve my math skills? I can't calculate in my head (I.e 2x43), I would actually have to write it down to solve it. I took pre-calc, calc and didn't have problem understanding. I don't know what is wrong. what should I do?
February 27, 2015 by john

Consider the function f(t)=2sec^2(t)–10t^3. Let F(t) be the antiderivative of f(t) with F(0)=0. Then F(2) my problem is i get 2tan(t)-5/2t^4+c i plug in 2 and don't get the right answer please help
June 5, 2009 by sonia

I am stuck solving this problem, any help please..Many thanks find all numbers x that satisfy the given equation ln(2x) ------- =2 ln(3x)
December 9, 2010 by Roy

Calc Help Please Again!
Find the volume of the solid formed by rotating the region enclosed by y=e^(1x)+4, y=0, x=0 and x=0.2 about the x-axis? Ty
May 16, 2014 by Josh

Go over this with me please, I forgot how to do it. Solve the polynomial equation. 15x^3-119x^2-10x+16=0
November 17, 2014 by Anonymous

y^2+xy-3x=-5 dy/dt=-4 x=3 y=1 find dx/dt. i tried doing 2y(dy/dt)+ydx/dt-3=0 but i am not getting the right answer. Please tell me where i am going wrong.
May 24, 2016 by Brittney

Evaluate the limit using l'hospitals rule. lim->0 (3^x-6^x)/x. Do not know where to even begin on this one... please help.
June 2, 2016 by Lisa

How can this be proven! I have tried so many ways! PLEASE help! Verify using an example that Vector a + (Vector b • Vector c) = (Vector a • Vector b) + Vector c? Explain your reasoning.
July 1, 2008 by Sick Sick

C code
Write a .c file named calc that: - Takes arguments from the command line - Solves a simple math problem - Returns the result as an exit status calc.c: //this is the function that gets called when the executable is run. int main(int argc, char * argv[]){ //I've given you the ...
February 6, 2013 by Nick

Calc Help
q=(1000/p+1)^2 - 1 find q' Please help. Question on review sheet. I will be glad to help you, or critique your work. What do you think the way to solve it is>
May 1, 2007 by Evan

calc- please help
given x=2cos(t)+t*sin(t) and y=2sin(t)-t*cost(t), with t:[pi, 2pi] find all critical values. (4 answers)
May 20, 2007 by Mischa

Pre Calc
lim x approaches 0 [1/x *((1/(sqrt(1+x))-1)] It will be easier to understand if you write it out.. How would I algebraically do this? (The answer is -1/2) Help please?
March 18, 2009 by MW

Calc Help :(((((
Find the derivative of the following function showing your work and fully simplifying your answer. Show steps please! Thank you!!!!!! f(x)=(x+3)^3(x-8)^5
March 12, 2014 by Kim

Please help me. Use Descartes' rule of signs to describe the roots for each polynomial function. 3. m(x)=x^3+3x^2-18x-40
November 9, 2014 by Anonymous

∫ (2x+1)/(x+1) dx Please show steps if you work it. I think it's a partial fraction and worked with decomposition. Not sure though.
March 14, 2015 by Janice

College Calc
What is the minimum number of feet of fencing needed to create a rectangular garden with an area of 576ft? Please help!!
December 3, 2016 by Kyle

calc check please?
Given the differential equation: dy/dx = y(1+x), y(0)=1, Use Euler's method with step size .1 to approximate y(.3). ... please check this for me! no one has responded to this question yet.. thanks. y' = y(1+x), y'(0) = 1(1+0)=1 ->the solution has slope 1 at the point (0,1...
July 2, 2007 by COFFEE

suppose you need to construct a cone who surface area is 100 sq in. (A= pi*r*(sqrt( r^2+h^2), this is the amount of carboard needed to construct the cone. find values of r and h that will maximize the volume of the cone (V= (pi/3)r^2h Please help. explanations and steps please...
December 17, 2010 by CM

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