Find the derivative of $\mathrm{tanh}\left(3x^2+5x\right)$

Find the derivative

$\frac{d}{dx}\left(x^2+y^2\right)$

$\frac{d}{dx}\left(\arctan\left(x-\sqrt{1+x^2}\right)\right)$

$\frac{d}{dx}\arctan\left(x-\sqrt{1+x^2}\right)$

$\frac{d}{dx}\arccos\left(\sqrt{1-x^2}\right)$

$\frac{d}{dx}\left(\cosh\left(x^5\right)\right)$

$\frac{d}{dx}\left(\sinh^2\left(7x\right)\right)$

Find the derivative

$\frac{d}{dx}\left(x\sinh x-\cosh x\right)$