Wednesday
April 16, 2014

Homework Help: CALC

Posted by Dan on Sunday, November 9, 2008 at 9:20pm.

find the following derivatives:

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.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

calculus - find the following derivatives: f(x) = (2x+5)/(x^2-3) f'(x)= (2)*(x^2...
College Calc - Problem: y=sqrtx ^1/x. Find DY/DX. ln(f(x))=lnx^1/2x or lnx to ...
Mathematics - Trigonometric Identities - Reiny - Mathematics - Trigonometric ...
Calculus - I don't know if I did these problems correctly. Can you check them? ...
math - the problem is 2cos^2x + sinx-1=0 the directions are to "use an identity ...
Mathematics - Trigonometric Identities - Prove: sin^2x - sin^4x = cos^2x - cos^...
Trig - Simplify sin x cos^2x-sinx Here's my book's explanation which I don't ...
Math (trigonometric identities) - I was given 21 questions for homework and I ...
Trig....... - I need to prove that the following is true. Thanks (2tanx /1-tan^x...
Trig Help - Prove the following: [1+sinx]/[1+cscx]=tanx/secx =[1+sinx]/[1+1/sinx...

Search
Members