Inverse Trigonometric Functions

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

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

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

$\frac{1+2 x^2}{x|x|\left(x^2-1\right)^{\frac{3}{2}}}$