$tan^5x\:=\:tanx\:-\:2tanxsec^2x\:+tanxsec^4x$

$\int\left(7sec^3\left(3x\right)\right)dx$

$\frac{x+3}{x-2}>2$

$\int_{-6}^6\left(\frac{5}{6+2x^2}\right)dx$

$\lim_{x\to\frac{\pi}{2}}\left(\frac{ln\left(senx\right)}{\pi-2x}\right)$

$9,72-75,42$