Thursday

November 26, 2015
Number of results: 349

**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
*December 1, 2011 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
*October 9, 2008 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
*March 23, 2010 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
*March 7, 2012 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!
*September 9, 2007 by Joe*

**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 ...
*November 1, 2011 by Mishaka*

**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...
*July 30, 2007 by COFFEE*

**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 ...
*April 5, 2007 by Amy*

**math derivatives**

An architect is designing a rectangular building in which the front wall costs twice as much per linear metre as the other 3 walls. The building is to cover 1350 m2. What dimensions must it have so that the costs of the walls is a minimum? write a formula using derivatives
*June 6, 2015 by Barry*

**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 ...
*March 14, 2007 by Amy*

**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.
*April 12, 2012 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.
*June 18, 2013 by Robin*

**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 ...
*October 3, 2013 by Daisy*

**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)
*March 11, 2012 by maria*

**Calculus**

Just got through with derivatives, power rule, and chain rule. I am supposed to find the first and second derivatives of the function. y = 4x/√x+1 and y = cos^2(x) y' = [(x+1)^(1/2)(4)]-[(4x)(1/2(x+1)^(-1/2))(1)] y' = [4(x+1)^(1/2)-4x]/[2(x+1)^(1/2)(x+1)] y' = (2-4x)/(x+...
*September 26, 2015 by Justin*

**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...
*June 13, 2007 by Raj*

**calculus**

derivatives. f(x)=(1/-7x^12) f'(2)=? f'(-1)=?
*January 18, 2008 by mike*

**Math-Derivatives!!!**

-4x^4 x^1/2+(-7/(x^2 x^1/2))
*September 9, 2010 by Janel*

**Derivatives ~ Calculus**

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

**Calculus**

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

**Maths Derivatives**

If y = x ^ n + ( 1 / x ^ n ) prove that ( x^2y'' ) + ( xy' ) - ( n^2y ) = 0
*October 25, 2011 by Yousef*

**Calculus-derivatives**

Determine h'(x) for h(x)= [x/(1-x)]^2
*February 20, 2012 by Jessi*

**Derivatives**

differentiate and simplify y= (e^x - 1) / x^2
*March 25, 2012 by help*

**derivatives**

Applications of derivatives A rectangle has its base on the x axis and its upper two vertices on the parabola y=12 - x^2. What is the largest area the rectangle can have, and what are its dimensions. Support your answer graphically. Thanks. Well, the parabola is symettric ...
*November 18, 2006 by Jen*

**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 ...
*March 7, 2011 by KIKSY*

**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
*October 22, 2006 by 413*

**Calc**

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

**calc**

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

**calculus**

find the derivatives F(x)=8ln(x^5-2x)
*April 6, 2011 by melissa*

**derivatives**

How do you find the derivative of (6 csc x)/x?
*October 28, 2011 by hannah*

**derivatives**

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

**Calc**

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

**Calc**

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

**Calc**

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

**calc**

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

**calc**

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

**calculus derivatives**

Please confirm: {(5x+2)^4/x^2-3x+1)^3}= 20(5x+2)^2(x^2-3x+1)^3 -3x^2(5x+2)^4 (x^2-3x+1)^2/(x^2-3x+1)^6
*July 19, 2012 by Laurie*

**Maths**

Find the derivatives of these: f(x)=√
*November 13, 2012 by alexis*

**calculus**

Find the derivatives of the functions k(x)=(x^3+e^x)^4
*February 11, 2013 by Joe*

**Derivatives**

Find the derivative of xsecy+y^5=5x^3-7
*June 26, 2014 by Sarah*

**Calc--derivatives**

find the der of y= x^(lnx) thanks
*October 13, 2009 by Carolina*

**Calculus (derivatives)**

Find the derivative of cos^2(4x)
*November 3, 2009 by Amanda*

**calculus**

find the derivatives 1. y=sin^3(2x)(cos2x)
*January 4, 2011 by gen*

**calculus**

find the derivatives 1. y=sin^3(2x)(cos2x)
*January 4, 2011 by gen*

**calculus**

derivatives: 2. cos teta/ 1+sin^2
*January 4, 2011 by gen*

**Derivatives**

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

**trig derivatives**

How do I find the derivative of 6 + 8cosx?
*October 27, 2011 by lily*

**derivatives**

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

**Math**

Find the derivatives of the function g(t)= cosh^3 t.
*October 9, 2012 by Joe *

**math**

what is meanning frechet and gateaux derivatives
*November 6, 2015 by assma*

**Econ/Math Derivatives**

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

**Calculus**

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

**calculus**

derivatives: 3. y= cot^3(2/x) 4. y= csc^5 (1-t+3t^2) 5. y=sec(5x)/tan3x
*January 4, 2011 by gen*

**Calculus(derivatives)**

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

**Calculus (derivatives)**

find the slopes at the indicated points y = 3 + 5x - 3x^3 (0,3), (1/2, 41/8), (2,-11)
*October 13, 2011 by Nemo*

**Anti-Derivatives**

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

**calc**

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

**math (2)**

Find the first partial derivatives of the function. f(x,y,z) = xe^(y/z) a. fx = ? b. fy = ? c. fz = ?
*April 30, 2014 by Mia*

**math (2)**

Find the first partial derivatives of the function. f(x,y,z) = xe^(y/z) a. fx = ? b. fy = ? c. fz = ?
*May 1, 2014 by Mia*

**math**

Z=square root of (x^2+y^2) + xy Find the partial derivatives: x, xx, y, yy, xy. Thanks.
*September 24, 2014 by jean*

**calculus**

Z=square root of(x^2+y^2) + xy Find the partial derivatives: x, xx, y, yy, xy. Thanks.
*September 24, 2014 by jean*

**Calculus**

I get mixed up when graphing derivatives. If I'm given the graph of f how do I get f' and f"?
*January 12, 2015 by Anonymous*

**Calculus, derivatives**

The curve is given by x^2+2r(sqrt(y))=xy What is dx/dr when y is constant?
*May 8, 2015 by Andy*

**Calculus, derivatives**

Derivative of y=(a^x)+(x^a). Show steps, please.
*June 27, 2015 by Walt*

**calculus**

find the first and second derivatives for 3x^4-4xy^2+7=2y
*October 14, 2015 by jack*

**calculus**

Let f be a function that has derivatives of all orders for all real numbers. Assume f(0)=5, f'(0)=-3, f''(0)=1, and f'''(0)=4. Write the third-degree Taylor polynomial for h, where h(x) = integral of f(t)dt from 0 to x, about x=0 for this part, I got 5x-3x^2/2+x^3/6. Then the ...
*March 16, 2007 by Meredith*

**calculus**

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

**Derivatives**

Find dy/dx for the function, xy-x-12y-3=0. Is the answer -14,I got this from 1-1-12=0, which solves to -14.
*November 5, 2008 by George*

**calculus**

find the partial derivatives du/dx, du/dy and du/dt. u= root (r^2+s^2, r = y + x cos(t), s = x + y sin(t);when x = 0, y = 2, t = 2
*October 10, 2011 by Ramesh*

**Calc**

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

**trig**

I need help finding derivatives and antiderivatives. Given: f(x),find f'(x) 1. f(x)-2x^6 2. f(x)= -3x +7 3. f(x)= 3x^2 - 5x 4.f(x)= 1/2x^2 - x + 4
*January 12, 2012 by Anna*

**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?
*February 29, 2012 by Melinda*

**science**

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

**Math: Calc: Implicit Derivatives**

Find dy/dx give the relation (x^2/9)+(y^2/16)=1 Thank you!!
*June 14, 2012 by Joey*

**math**

find the derivatives, dy/dx for the folowing function : y=ln(cos(0.5)+(sin(x^2+3))^1/3)
*August 25, 2012 by deel*

**Calculus**

Find all first partial derivatives: f(x,y)=e^(xy)cosx
*May 31, 2013 by Elyse*

**Derivatives**

Can you help me find the derivative of this function, I keep messing up of the steps :( f(x)= (x-2)(x^2-3x-1)
*November 9, 2014 by Alex*

**Derivatives**

Find derivative of y= x^3(5x-1)^4 I got y'= 2x(5x-1)^3 +16x^2+5x-1 is this right? If not what and where did I go wrong
*November 11, 2014 by Holly*

**math**

Find the first order partial derivatives. z=ln(xy-sqrt(x^2-y^2)
*November 23, 2015 by jay*

**Calculus - Anti-Derivatives**

How would you find the Integral of (cos(x\8))^3, defined from -(4 x pi)/3) to (4 x pi)/3)
*March 14, 2008 by Sean*

**calculus - (derivatives)**

Find the derivative of the function f by using the rules of differentiation. F(x) = 3 x
*September 21, 2008 by B <3*

**Differential Euation**

How do you find the primes denote derivatives with respect to x. Such as xy'+ 5y= 7x^2, y(2)= 5
*February 15, 2012 by Danielle*

**Calculus First Derivatives**

If f(2) = 2.5 and f'(2) = -2.5, then f(2.5) is approximately... I have no idea how to do this without an equation.
*May 31, 2012 by PLEASE HELP*

**calculus/derivatives**

I need to find the derivative and can't do them when they are raised to powers? Thank You. m(x)x^5 - 5x^3+7x -4)^10 (4x^9 +19)^23 this on is tuff!
*July 18, 2012 by cathy*

**Calculus - HELP plz!**

Find all of the first partial derivatives of f(x,y,z)=arctan y/xz
*June 2, 2013 by Sara*

***math (7)**

Evaluate the first partial derivatives of the function at the given point. f(x, y) = x^2 + xy + y^2 + 2x - y ; at (-5, 4) fx(-5, 4) = ? fy(-5, 4) = ?
*April 29, 2014 by Mia*

**math (3)**

Evaluate the first partial derivatives of the function at the given point.(0,e) f(x,y) = 6e^x ln(y) fx(0,e) = ? fy(0,e) = ?
*April 30, 2014 by Mia*

**Calc.**

How do I deal with square roots and derivatives? Like: f(x)= Sqrtx....the derivative. find
*July 16, 2008 by Derek*

**Calculus Derivatives**

what's the equations of both lines through the point (2,3) that are tangent to the parabola y=x^2+x
*September 22, 2008 by Lisa*

**differential calculus**

use the product rule to find the derivatives of the given function y=(3x^2-8)^2
*April 30, 2011 by ash*

**calculus-derivatives**

y=cos^3(12theta) find derivative using chain rule
*September 27, 2011 by hailey*

**Calculus (derivatives)**

find an equation of the tangent line to the curve at the indicated point. y = -(x^1/3); (8, -2)
*October 13, 2011 by Nemo*

**calc 3**

Find all partial derivatives? v = (xy)/(x-y) vxx= vxy= vyx= vyy=
*September 19, 2012 by Becky*

**Calc 3**

Find all partial derivatives? v = (xy)/(x-y) vxx= vxy= vyx= vyy=
*September 20, 2012 by Becky*

**Calculus**

Find the derivatives of the function f(t)=cosh^2(4t)-sinh^2(4t). Simplify your answer completely.
*March 3, 2013 by Mike*

**maths**

find the maximum valu of any of the function without using derivatives 16x+8x+7
*June 26, 2014 by sandeep*

**Math**

Find the derivative of: ln(2x/x+1) the answer is 1/x(x+1) but i can't seem to solve it that far. ln [2x/(x+1)] = ln 2 + ln (x) - ln(x+1) Add the derivatives of each term and you get 1/x - 1/(x+1) = [(x+1) - x]/[x(x+1)] = 1/[x(x+1)]
*March 18, 2007 by Freddy*

**Calculus**

Find a formula for the derivatives of the function m(x)=1/(x+1) Please help.....Any assistance would be greatly appreciated.
*September 12, 2008 by George*

**Calculus-Derivatives**

How is 6#sin(#x-1)/cos^3(#x-1) the derivative of f(x)= 3sec^2(#x-1)? #= Pi (I coulnd't find the symbol...sorry.)
*September 28, 2008 by Charles*

**Pre Calc**

f(x,y)=ln(5x^2-7y^3) Find ALL 2nd derivatives. fxx,fxy,fyx,fyy
*December 10, 2010 by Sara*