Wednesday

April 1, 2015

April 1, 2015

Posted by **Jacob** on Saturday, September 18, 2010 at 1:36am.

dh

dx

x = 4 ,

h (x) = (x^(-1/2) + 7x)(9 - x^-1)

very weird.. i know how to do it, i used product rule and got an answer in decimal but the website is not accepting it. Can any one help me?...

- CALCULUS -
**drwls**, Saturday, September 18, 2010 at 2:29amLet's multiply it out and not use the product rule. The answer should be the same.

h(x) = 9x^(-1/2) -x^(-3/2) +63x -7

dh/dx = -(9/2)x^(-3/2) +(3/2)x^(-5/2) + 63

dh/dx @ x=4 = (-9/2)(1/8) +(3/2)(1/32)+63

= -9/16 +3/64 +63

**Answer this Question**

**Related Questions**

Calculus - How do I use the chain rule to find the derivative of square root(1-x...

Math, Calculus - Find the derivative of the function. y= xcosx - sinx What's the...

calculus - derivative of f(x)=arctan(x^2-x) is it the product rule or the chain ...

Product Rule - Can someone please help me with this? f(x)=(x-2)^1/2 * (x^2-3)^3 ...

Calculus - Use the product rule to find the derivative of the following. k(t)=(t...

Calculus - Match the rule with the title: ____ 3. d/dx [f(x)/g(x) ]=(g(x) f^' (x...

Calculus - Use the Product Rule to find the derivative of the function. f(x) = (...

Calculus - What would an example of a logarithmic function that contains two ...

Calculus - g(x)=[(4x-7)(x+11)] Find g'(x) I thought that you use the product ...

calculus - How do I use the product rule to find the derivative of the following...