If $x = a \cos^3 \theta$ and $y = a\sin^3 \theta$, then $1 + \left( \dfrac{dy}{dx} \right )^2$ is

$\frac{d}{d x}\left(e^{\sqrt{2 x}-3}\right)=$ কত?

  $\cos{\sqrt{x}}$   এর অন্তরক সহগ কোনটি?

Differentiate $\log(1+x^{2})$ with respect $\tan^{-1}x$.

$\frac{d}{d x}\left(\frac{\sqrt{1+\sin 2 x}}{\sin x+\cos x}\right)=?$