$\quad \log (\sec x+\tan x)+2 \tan \left(\frac{x}{2}\right)+\mathrm{c}$, where c is the constant of integration

$\quad \log (\sec x+\tan x)-2 \tan \left(\frac{x}{2}\right)+\mathrm{c}$, where c is the constant of integration

$\log (\sec x+\tan x)+\tan \left(\frac{x}{2}\right)+\mathrm{c}$, where c is the constant of integration

$\log (\sec x+\tan x)-\tan \left(\frac{x}{2}\right)+\mathrm{c}$, where c is the constant of integration

$\frac{7^{7^x}}{(\log 7)^3}+\mathrm{k}$, where k is constant of integration

$\frac{7^{7^{7^x}}}{\log 7}+\mathrm{k}$, where k is constant of integration

$\frac{7^{7^{7^x}}}{(\log 7)^3}+\mathrm{k}$, where k is constant of integration

$7^{7^{7^x}}(\log 7)^3+\mathrm{k}$, where k is constant of integration

$\log \sec (9 x)-\log \sec (2 x)+\mathrm{c}$, where c is the constant of integration

$\log \sec (9 x)+\log \sec (2 x)+\mathrm{c}$, where c is the constant of integration

$\frac{1}{9} \log \sec (9 x)-\frac{1}{2} \log \sec (2 x)+\mathrm{c}$, where c is the constant of integration

$\frac{1}{9} \log \sec (9 x)+\frac{1}{2} \log \sec (2 x)+\mathrm{c}$, 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.

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

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