Posted by **Sean** on Tuesday, January 22, 2008 at 9:08pm.

Derivative of Inverse Trigonometric Functions

f(x) = cos(arcsin(2x))

What is f'(x)?

- Calculus III -
**Damon**, Tuesday, January 22, 2008 at 9:18pm
I did this down below, after the one drwls answered

- Calculus III -
**Anonymous**, Tuesday, January 22, 2008 at 9:30pm
Oh.

But the text book I'm using gives me the answer:

Sqrt(1-4x^2)

No denominators or anything.

- Calculus III -
**Damon**, Tuesday, January 22, 2008 at 9:59pm
That is just the first step.

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