Friday

April 18, 2014

April 18, 2014

Number of results: 675

**convert derivatives of x,y,z, to r, Ɵ,z**

convert derivatives of x,y,z, to r, Ɵ,z with chain rule? I want provment rules of converting rectangular derivatives to cylindrical derivatives and and also cylindrical to spherical.I know the rules but I cant prove EQUATIONS.thx alot
*Thursday, December 1, 2011 at 2:58pm by parsa*

**math**

I studied derivatives before, but kind of forgot them all, is there a website that gives me an overview of derivatives. What is first and second derivatives, how to find it, all the derivative rules and so on... thank you
*Thursday, October 9, 2008 at 12:52am by Sam*

**Math-Derivitives **

if f(x)=x^3+5x, then f'(2)= if f(x)=cos(2x), then f'(pi/4) derivatives and anti derivatives please help
*Tuesday, March 23, 2010 at 10:18pm by AdrianV*

**calculus**

find the second-order partial derivatives of f(x,y)=x^3 + x^2y^2 + y^3 + x+y and show that the mixed partial derivatives fxy and fyx are equal
*Wednesday, March 7, 2012 at 11:06am by maggie*

**calculus**

find the second-order partial derivatives of f(x,y)=x^3 + x^2y^2 + y^3 + x+y and show that the mixed partial derivatives fxy and fyx are equal
*Wednesday, March 7, 2012 at 11:10am by maggie*

**Calculus: Derivatives**

I'm having trouble understanding what derivatives in calculus (instantaneous speed) is. Can someone please explain it to me, or provide some easy links to learn from? Thanks!
*Sunday, September 9, 2007 at 8:32pm by Joe*

**math**

It is important to know rates of change in many fields. Derivatives appear often in physics and engineering. Accurate predictions are made using equations that employ derivatives. They are called differential equations.
*Saturday, August 21, 2010 at 3:29am by drwls*

**Statistics & Numerical Techniques**

Because that is the rule for polynomial derivatives. Add up the derivatives of each term. The derivative of a constant term (like -20 in your case) is zero. The derivative of a*x^n is n*a*x^(n-1)
*Wednesday, September 16, 2009 at 7:33am by drwls*

**calculus (limits)**

I do know how to take derivatives however the course I'm in hasn't taught them yet (long story) so I can't use derivatives in finding the solution; I have to factor. So perhaps a better question is: how do I factor the above expression in a way that will allow me to find the ...
*Saturday, January 22, 2011 at 2:09pm by John*

**Calculus (Derivatives)**

What is the derivative of the this functon? g(x) = -500/x, x cannot equal 0. I know that in order to fnd the derivative I need to put the function into the equation for evaluating derivatives as limits. lim as h -> 0 (f(x+h) - f(x))/h I did this, but I am having ...
*Tuesday, November 1, 2011 at 2:37pm by Mishaka*

**derivatives**

You should have a list handy for the basic trig function derivatives so if y = (csc x)^7 -cos 4x dy/dx = 7(csc x)^6 ( -csc x)(cotx) + 4sin(4x) etc
*Thursday, October 27, 2011 at 11:57pm by Reiny*

**math**

You also can in google type: derivatives online When you see listo of results click on: numberempirecom/derivatives.php and solvemymathcom/online_math_calculator/calculus/derivative_calculator/index.php On this sites you will see your derivation in two different simplify forms
*Wednesday, February 16, 2011 at 8:05pm by Bosnian*

**derivatives**

The derivatives of these trig functions should be right there in your Calculus text. for the second of your questions, I will use y' for the first derivative and y" for the second derivative i.e. y'= dy/dx 1+y=x+xy so y' = 1 + y + xy' y'(1-x) = 1+y y' = (1+y)/(1-x) y" = [(1-x)...
*Wednesday, October 31, 2007 at 10:34pm by Reiny*

**Calculus**

show that the curves r=asin() and r=acos() intersect at right angles. can you show that the derivatives for each are the negative reciprocal of each other? That is the key. i need more info..i know how to find the derivative...but how will that prove my question. Do I need ...
*Thursday, April 5, 2007 at 6:02pm by Amy*

**Calc 2**

a) find the partial derivatives of each, and just plug in 1 for x and 3 for y (values should be close to 0)/ b) in using the difference quotients, take the limit as h approaches infinity of both each derivative, plugging in 0.1 for x and y in each one. It's better that you ...
*Sunday, February 27, 2011 at 11:18pm by Joseph*

**calculus**

a)find the first partial derivatives of f(x y)= x √1+y^2 b)find the first partial derivatives of f(x,y)= e^x ln y at the point (0,e)
*Sunday, March 11, 2012 at 1:00pm by maria*

**calculus - derivatives**

can you please find the first 5 derivatives for: f(x) = (0.5e^x)-(0.5e^-x) f'(x) = ? f''(x) = ? f'''(x) = ? f''''(x) = ? f'''''(x) = ? thanks :) f(x) = (0.5e^x)-(0.5e^-x) f'(x) = 0.5 e^x + 0.5 e^-x f''(x) = 0.5 e^x - 0.5 e^-x f'''(x) = 0.5 e^x + 0.5 e^-x f''''(x) = 0.5 e^x - 0...
*Monday, July 30, 2007 at 6:15pm by COFFEE*

**Calculus grade 12**

a) determine the derivative of y = sin2x b) determine the derivative of y = 2SinxCosx c) shoe that derivatives in parts a) and b) are equal d) explain why derivatives in parts a) and be should be equal.
*Thursday, April 12, 2012 at 12:31am by Julie*

**Calculus**

Find the outside and inside functions of the following to find their derivatives: 1) sqrt(2x+9) 2) cos(cos(x)) 3) tan(x) I already know how to find their derivatives I'm just not exactly sure what parts of the chain rule equation would be considered the outside and inside.
*Tuesday, June 18, 2013 at 2:41pm by Robin*

**Calculus/Derivatives**

In addition, can you walk me through how to get the derivatives for these 2 statements, too? a) y = x^5/3 - 5x^2/3 b) y = (the cubed root of the quantity) [(x^2 - 1)^2] Hi there. I need to find the first derivative of this statement. y=x(x+2)^3 I tried the chain rule, but I ...
*Wednesday, March 14, 2007 at 9:07pm by Amy*

**Derivatives**

Find the derivatives of: 1. H(x)= sin2xcos2x The answer given is 2cos4x. My question is, how in the world did they get that!? Shouldn't the answer at least contain the sin function, either negative or positive seeing as it's the derivative of cos? Also, which rules are ...
*Thursday, October 3, 2013 at 3:52am by Daisy*

**Calc. Checking Answer**

a. correct b.Somehow I get the negative of your result. See http://calc101.com/webMathematica/derivatives.jsp#topdoit
*Wednesday, April 6, 2011 at 5:36pm by bobpursley*

**Calculus 2**

I don't understand why you were instructed to use trig substitution for this question, it is straightforward You should recognize certain pattern of derivatives and integrals Notice that the derivative of the denominator is 2x and we have x at the top, so this follows the ...
*Wednesday, October 10, 2012 at 9:08pm by Reiny*

**math**

Have you considered a Calculus Text? Even a review/study guide? Schuam's College Outline Series, College Calculus is very good. It is available at Barnes Noble. http://math2.org/math/derivatives.htm
*Thursday, October 9, 2008 at 12:52am by bobpursley*

**Math >> limits**

The limit is of the form: Lim x--> 0 f(x)/g(x) where f(0) = g(0) = 0. So we can't take the limits for f and g separately and divide them. Rewrite the limit as: Lim x--> 0 [f(x) - 0]/[g(x) - 0] = Lim x--> 0 [f(x)-f(0)]/[g(x)-g(0)] Lim x-->0{[f(x)-f(0)]/x}/{[g(x)-g(0...
*Wednesday, September 5, 2007 at 6:57am by Count Iblis*

**Calculus**

What is wrong with the following reasoning??? f(x) = 2^x f'(x) = x[2^(x-1)] Although n x^(n-1) is the derivative of x^n, you cannot apply similar rules when x is the exponent and the number being raised to a power is a constant. The derivative of b^x, where b is a constant, is...
*Wednesday, June 13, 2007 at 10:40pm by Raj*

**Calculus**

Without specifying the f(x,y,t) function, you can only give a general formula. dz/dt(total) = z/x*dx/dt + z/y*dy/ dt + z/t where all of the z derivatives on the right are partial derivatives. dz/dt(total) = b z/x+ c z/y + z/t I won't know if the ...
*Saturday, February 27, 2010 at 2:11pm by drwls*

**derivatives**

[ low*d(high) - high*d(low) ] / (low)^2 where high = numerator low = denominator d(high) and d(low) = respective derivatives first recall that the derivative of csc x = -(cot x)(csc x) therefore, [ x*(-6 (cot x)(csc x)) - 6 (csc x) ]/x^2 or -(6 csc x)*(x(cot x) + 1)/x^2 hope ...
*Friday, October 28, 2011 at 1:29am by Jai*

**Calculus AB**

http://www.jiskha.com/display.cgi?id=1292545967 list of common derivatives http://www.ecalc.com/math-help/worksheet/calculus-derivatives/
*Thursday, December 16, 2010 at 7:28pm by TutorCat*

**Calc 2**

Lim 3x^2 csc^2 can be written x->0 Lim 3x^2/sin^2x x->0 You can get the limit as x->0 using L'Hopital's rule: It is the ratio of the derivatives of numerator and denominator. You have to apply it twice here, since the first derivatives are also 0/0 Lim 3x^2/sin^2x x-&...
*Friday, February 29, 2008 at 12:56am by drwls*

**Calculus (final question I promise)**

After all the help you have received here, you should be able to most of these questions yourself. You should also make the effort to type a ^ before exponents. Show your work and someone will help you. Factor the equations to find the x-axis interecepts. plug in x = 0 to get ...
*Monday, July 28, 2008 at 8:56pm by anonymous*

**Derivatives**

differentiate and simplify y= (e^x - 1) / x^2
*Sunday, March 25, 2012 at 4:37pm by help*

**Calculus - Derivatives**

Oh, okay. I got it. Thanks!
*Wednesday, October 3, 2007 at 11:39am by Adam*

**Calculus**

isn't there a way you do it with the derivatives?
*Tuesday, November 13, 2007 at 12:31pm by Joe*

**Calc--derivatives**

did u get e^(lnx) / x^2 ??
*Tuesday, October 13, 2009 at 5:45pm by Carolina*

**Math-Derivatives!!!**

-4x^4 x^1/2+(-7/(x^2 x^1/2))
*Thursday, September 9, 2010 at 8:13pm by Janel*

**Calculus**

Compute the derivatives of : f(x)= x^7 + 7^x+ 7^7
*Monday, November 22, 2010 at 6:54pm by JJ*

**trig derivatives**

-8sinx
*Thursday, October 27, 2011 at 11:21pm by Reiny*

**Calculus-derivatives**

Determine h'(x) for h(x)= [x/(1-x)]^2
*Monday, February 20, 2012 at 3:23am by Jessi*

**Calculus**

Hi~ Thank you for your help! I was trying to work on a problem about Taylor series, but i don't think im approaching the problem the right way. I have to find the fifth order Taylor polynomial and Taylor series for the function f(x) at x = 0. f(x) = 1/(x+2) I tried to just ...
*Monday, March 7, 2011 at 9:18pm by KIKSY*

**calculus**

derivatives. f(x)=(1/-7x^12) f'(2)=? f'(-1)=?
*Friday, January 18, 2008 at 6:47pm by mike*

**// calculus - derivatives**

yours is correct
*Saturday, October 24, 2009 at 5:56pm by bobpursley*

**calc**

What are the first and second derivatives of y = (1/x^2)-(1/(x-2)^2)?
*Sunday, November 1, 2009 at 8:18pm by Freddy*

**Math-Derivatives. **

good job
*Wednesday, March 24, 2010 at 10:50pm by Reiny*

**derivatives**

How do you find the derivative of (6 csc x)/x?
*Friday, October 28, 2011 at 1:29am by hannah*

**Calc**

What are the first and second derivatives of y= x^(2/3) * (2.5 - x)
*Sunday, January 8, 2012 at 6:41pm by Anonymous*

**Calc**

what are the first and second derivatives for y= x* (4-x^2)^1/2
*Sunday, January 8, 2012 at 6:42pm by Anonymous*

**calc**

what are the first and second derivatives for y= x* (4-x^2)^1/2
*Sunday, January 8, 2012 at 10:24pm by Anonymous*

**calc**

What are the first and second derivatives of y= x^(2/3) * (2.5 - x)
*Sunday, January 8, 2012 at 10:24pm by Anonymous*

**Calculus-derivatives**

Oh crap nvm!
*Wednesday, February 15, 2012 at 5:37pm by Jake*

**Anti-Derivatives**

Integrate? Meaning?
*Thursday, April 26, 2012 at 3:32pm by I Need Help*

**CALCULUS DERIVATIVES CONTINUITY**

I agree with e
*Thursday, May 31, 2012 at 5:11pm by Damon*

**Maths**

Find the derivatives of these: f(x)=√
*Tuesday, November 13, 2012 at 11:18pm by alexis*

**calculus**

Find the derivatives of the functions k(x)=(x^3+e^x)^4
*Monday, February 11, 2013 at 9:27pm by Joe*

**derivatives**

yup! sloppiness on my part
*Tuesday, March 18, 2014 at 11:39pm by Reiny*

**Calc-Derivatives**

correct, your thinking is right on
*Wednesday, November 28, 2007 at 8:38pm by Reiny*

**Calc--derivatives**

find the der of y= x^(lnx) thanks
*Tuesday, October 13, 2009 at 5:45pm by Carolina*

**Calculus-Derivatives**

what do you mean by something squared?
*Monday, April 12, 2010 at 11:29pm by John*

**calculus**

derivatives: 2. cos teta/ 1+sin^2
*Tuesday, January 4, 2011 at 12:18am by gen*

**calculus**

find the derivatives F(x)=8ln(x^5-2x)
*Wednesday, April 6, 2011 at 3:02pm by melissa*

**trig derivatives**

How do I find the derivative of 6 + 8cosx?
*Thursday, October 27, 2011 at 11:21pm by lily*

**derivatives**

How do I find the 2nd derivative of x^(-1/15)
*Friday, November 4, 2011 at 1:56am by Jacob*

**Calc**

What are the first and second derivatives of y= x-3x^(1/3)
*Sunday, January 8, 2012 at 6:40pm by Anonymous*

**Math: Derivatives**

How did you get the answer? I don't quite understand. Thanks
*Sunday, April 8, 2012 at 2:56pm by Nick*

**Derivatives (check answer)**

atsa right-a
*Monday, September 17, 2012 at 4:23pm by Steve*

**Math**

Find the derivatives of the function g(t)= cosh^3 t.
*Tuesday, October 9, 2012 at 10:27pm by Joe *

**Derivatives**

I'm not sure if this is correct. Can someone clarify thanks.
*Thursday, March 14, 2013 at 11:28am by Mark*

**Derivatives**

I have taken that into consideration; thank you!
*Thursday, March 14, 2013 at 11:28am by Mark*

**Derivatives**

Oops I meant 4x^3 + x^2 - 12x + 1/ ((x^2+1)^3)
*Monday, May 6, 2013 at 11:42am by Alaina*

**derivatives - oops**

d/dx sinx = cosx
*Tuesday, March 18, 2014 at 11:39pm by Steve*

**Calculus**

Find a formula for the derivatives of the function m(x)=1/(x+1) IS the answer -1/(x+h)(x+h+1)
*Saturday, September 13, 2008 at 3:50pm by George*

**Calc**

What are the derivatives? Thanks a) y = log(base2)(4-9x) b) y = x^(8x)
*Monday, October 20, 2008 at 4:15pm by Michael*

**Partial Derivatives**

nvrm I figured it out myself
*Monday, October 12, 2009 at 8:16pm by Anonymous*

**Calculus (derivatives)**

Find the derivative of cos^2(4x)
*Tuesday, November 3, 2009 at 5:41pm by Amanda*

**calculus**

find the derivatives 1. y=sin^3(2x)(cos2x)
*Tuesday, January 4, 2011 at 12:17am by gen*

**calculus**

find the derivatives 1. y=sin^3(2x)(cos2x)
*Tuesday, January 4, 2011 at 12:18am by gen*

**Calculus(derivatives)**

f(x)=7cosx+6tanx, find f'(x)and f'(5pie/4)
*Thursday, February 24, 2011 at 7:59pm by Daniel*

**Math grade 12 **

Derivatives
*Saturday, August 13, 2011 at 9:59am by Atul prakash patil*

**derivatives**

how do u find the derivative of (csc x)^7 -cos 4x???
*Thursday, October 27, 2011 at 11:57pm by hannah*

**Calculus (Derivatives)**

I too was able to come to the derivative of 500/x^2
*Tuesday, November 1, 2011 at 2:37pm by Rodney*

**Calculus-derivatives**

Set the derivative equal to zero.
*Wednesday, February 29, 2012 at 12:16am by David*

**Calculus-derivatives**

A is your answer because what you have there is the product rule[F'(x)*G(x)+G'(x)*F(x)].
*Thursday, March 8, 2012 at 3:26am by Anonymous*

**Anti-Derivatives**

find the antiderivative of f(x) = x^3(x-2)^2 Someone help me please!
*Thursday, April 26, 2012 at 3:32pm by I Need Help*

**Derivatives ~ Calculus**

If dy/dx = (1 + x)/(xy), x>0, and y=-4 when x=1, then when x=3, y= what?
*Tuesday, June 5, 2012 at 6:27pm by Hannah*

**calc**

find the derivatives of the given functions. g(t)=sqrt t(1+t)/t^2
*Tuesday, February 5, 2013 at 12:51am by Jake*

**Calculus**

take derivatives, so the limit is 2/√(4u+1) / 1 = 2/3
*Monday, September 16, 2013 at 1:32pm by Steve*

**Derivatives**

What is f ''(x) and f ''''(x) of f(x)= e^-x^2 f"(x) = -e^-x^2(2x) F""(x)= -2e^-x^2 + 2xe^x^2 and also what is integral [0 to 2] f(x) dx
*Sunday, October 22, 2006 at 11:39am by 413*

**Econ/Math Derivatives**

Find the derivative of the quotients: y=4X/(X-3)
*Thursday, September 13, 2007 at 4:03pm by Rachel*

**Econ/Math Derivatives**

Use the u/v rule: (vdu - udv)/v^2
*Thursday, September 13, 2007 at 4:03pm by bobpursley*

**Math derivatives**

Both of your answers are correct. Nice job!
*Friday, August 15, 2008 at 12:41am by drwls*

**calculus**

Find the first and second derivatives of the function. h(x) = sqrt x^2 + 1
*Tuesday, October 14, 2008 at 7:20pm by Vishnu*

**Derivatives**

Find the derivative of g(t)=8t^2+9t at t=1 algebraically... g'(1)= _________
*Monday, February 14, 2011 at 3:06pm by Cad*

**derivatives**

I did use the chain rule in finding the derivative of (csc x)^7
*Thursday, October 27, 2011 at 11:57pm by Reiny*

**Calc**

what are the first and second derivatives of y= sinx - 3^1/2 cos x for x in [0,2pi]
*Sunday, January 8, 2012 at 6:42pm by Anonymous*

**Calculus**

The derivatives are messy. f = 2x/(1+x^2) f' = -2(x^2 - 1)/(1+x^2)^2 f'' = 4x(x^2 - 3)/(1+x^2)^3 f''' = -12(x^4 - 6x^2 + 1)/(1+x^2)^4 ...
*Thursday, February 9, 2012 at 10:06pm by Steve*

**Calculus-derivatives**

f(x) = (x-1)^(2/3)*(x+3) What are the critical numbers? the derivative would be =2/3(x-1)^(-1/3)(x+3) + (x-1)^2/3 What do I do next?
*Wednesday, February 29, 2012 at 12:16am by Melinda*

**science**

find derivative of f(x)=1/sqx^2+1 by using the defination of derivatives
*Saturday, March 10, 2012 at 8:44am by ibk*

**calculus-derivatives**

:D I'm so happy! Never thought to factor that out x) thank you!
*Thursday, March 15, 2012 at 1:39am by mary*

**Math: Derivatives**

The derivative of f(x) is -1-3/x² Don't know how you got -1, or what the question really is.
*Sunday, April 8, 2012 at 2:56pm by MathMate*

**Calculus - Anti-Derivatives**

Oh. Thank you, Damon, and Drwls. That really helped me out.
*Friday, March 14, 2008 at 5:55pm by Sean*

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