- #1

MHrtz

- 53

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## Homework Statement

Prove the Identity (show how the derivatives are the same):

arcsin ((x - 1)/(x + 1)) = 2arctan (sqr(x) - pi/2)

## Homework Equations

d/dx (arcsin x) = 1/ sqr(1 - x

^{2})

d/dx (arctan x) = 1/ (1 + x

^{2})

All my attempts have been messy and it may be because I didn't take the derivatives properly.

I attached what I got for the derivatives for both. If it's not the right derivative than what is? If it is the right derivative, where do I go from here?