Thursday

November 27, 2014

November 27, 2014

Posted by **Dan** on Sunday, November 9, 2008 at 4:26pm.

f(x) = (2x+5)/(x^2-3)

f'(x)= (2)*(x^2 -3)-(2x+5)*2x/(x^2-3)^2

is that correct???

f(x)= (lnx)(cos x)

f'(x)= 1/x*-sinx

or do i have to use the product rule??

thank you.

- calculus -
**Anonymous**, Friday, November 14, 2008 at 10:58amthe first one is correct, with the second you have to use the product rule

**Answer this Question**

**Related Questions**

CALC - find the following derivatives: f(x) = (2x+5)/(x^2-3) f'(x)= (2)*(x^2 -3...

College Calc - Problem: y=sqrtx ^1/x. Find DY/DX. ln(f(x))=lnx^1/2x or lnx to ...

Calculus (Derivatives) - Using the product rule, find the derivative of the ...

Calculus - Find the derivative of y with respect to x. y= [(x^5)/5]lnx-[(x^5)/25...

Calculus - Find the derivatives, dy/dx for the following functions. a. x^2y^4 = ...

calculus - Could someone check my reasoning? thanx Find the derivative of the ...

Calculus - Find the outside and inside functions of the following to find their ...

Derivatives - Find the derivatives of: 1. H(x)= sin2xcos2x The answer given is ...

Calculus/Derivatives - In addition, can you walk me through how to get the ...

differential calculus - use the product rule to find the derivatives of the ...