$\tan x+\cot x+\mathrm{c}$, where c is the constant of integration.

$\tan x-\cot x+\mathrm{c}$, where c is the constant of integration.

$\tan x \cot x+\mathrm{c}$, where c is the constant of integration.

$\tan x-\cot 2 x+\mathrm{c}$, , where c is the constant of integration.

$2,-3,6,-6$

$2,3,-6,6$

$2,-3,-6,6$

$-2,-3,6,6$

$x^2 \sin x+2 x \cos x-2 \sin x+\mathrm{c}$, where c is the constant of integration

$x^2 \sin x-2 x \cos x-2 \sin x+\mathrm{c}$, where c is the constant of integration

$x^2 \sin x-2 x \cos x+2 \sin x+\mathrm{c}$, where c is the constant of integration

$x^2 \sin x+2 x \cos x+2 \sin x+\mathrm{c}$, where $c$ is the constant of integration

0

1

2

-1