$0$

$e$

$\dfrac{1}{e}$

Does not exist

$\left(\dfrac{x + \log x}{x}\right)^2 + c$, where c is the constant of integration

$\dfrac{(x + \log x)^2}{x} + c$, where c is the constant of integration

$\dfrac{(x + \log x)^3}{3} + c$, where c is the constant of integration

$\dfrac{(x + \log x)^3}{3x} + c$, where c is the constant of integration

$\dfrac{\cot^3 x}{3} - \cot x + x + c$

$\dfrac{\cot^3 x}{3} + \cot x + x + c$

$-\dfrac{\cot^3 x}{3} + \cot x + x + c$

$\dfrac{\cot^3 x}{3} - 2\cot x + x + c$

$\log(\cos x) + \cos x + c$, where c is the constant of integration

$\log(\sin x) - \sin x + c$, where c is the constant of integration

$\log(\sin x) + \sin x + c$, where c is the constant of integration

$\log(\cos x) - \cos x + c$, where c is the constant of integration