Differentiation

$\frac{\sin ^{-1} x}{1-x^2}$

$\frac{\sin ^{-1} x}{\left(1-x^2\right)^{3 / 2}}$

$\frac{x}{1-x^2}$

$\frac{x \sin ^{-1} x}{\sqrt{1-x^2}}-\frac{2 x}{\sqrt{1-x^2}}$