- #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?