Differentiating Inverse Trigonometric Functions Practice Test

$\dfrac{1}{2\left(1+\left(\frac{x}{2}\right)^2\right)}$

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

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

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

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