- #1

tsuwal

- 105

- 0

## Homework Statement

Limit of (arcsen(2x)-2arcsen(x))/x^3 as x->0

## Homework Equations

arsen(x)'=1/Sqrt(1-x^2)

## The Attempt at a Solution

It's an 0/0 indeterminancy, to solve it, I had to use L'hopital's rule once simplify de expression, multiplying by the conjugate root. Is there an easier way?