Find the derivative using logarithmic differentiation method $\frac{d}{dk}\left(-\frac{3}{248}l^2+\frac{-\frac{21}{31}\cdot 10qk}{\sqrt{k^2+25}}\right)$

Find the derivative

$\frac{d}{dx}\left(\frac{2x^3}{\left(2-5x\right)\sqrt{x^2+1}}\right)$

Find the derivative

$\frac{d}{dx}\left(\frac{\arcsec\left(2x\right)}{\sqrt{4x^2-1}}\right)$

Find the derivative

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

Find the derivative

$\frac{d}{dx}\left(1+\frac{1}{x}\right)^x$

Find the derivative

$\frac{d}{dx}\left(1+\frac{7}{x}\right)^x$

Find the derivative

$\frac{d}{dx}\left(1+x\right)^{\frac{1}{x}}$

Find the derivative

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