Question

f(x)=cos(tan2x). Find f'(x)

Answer 1

\[f'(x)=-2\sin(\tan2x)\sec^22x\]

Answer 2

thanks :)

Answer 3

In case you want to use a non-human:
http://www.wolframalpha.com/
Enter your function in the slot here and type the word derivative before it.
Free mindless calculations!

Answer 4

thanks that would help a lot haha

Answer 5

Here's your particular problem:
http://www.wolframalpha.com/input/?i=derivative+cos%28tan2x%29

Answer 6

turing will be u be online for a while?

Answer 7

Um, sort of, but I will be having dinner so I may be distracted an bit.

Answer 8

means u can help! YAY! =D

Answer 9

Where? How?

Answer 10

i will post some questions..

Answer 11

Cool I hope I can help
Nice straightforward calculus please! :D