Encontrar la derivada de $-\mathrm{arccsc}\left(\frac{6x+7}{3}\right)$

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

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

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

$\frac{d}{dx}\arcsin\left(2x-3\right)$

$\frac{d}{dx}\left(\ln\left(\mathrm{sech}\left(3x+8\right)\right)\right)$

$\frac{d}{dx}\left(\arcsin\left(2x-5\right)\right)$

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