$\int\left(sen^32t\left\{\right\}\right)dx$

$\left(\frac{\left(1+2x^2\right)}{15-11x}\right)^4$

$9^1\cdot9^0$

$\int\frac{w^2}{\left(w^2+c^2\right)^{\frac{3}{2}}}dw$

$\lim_{x\to\pi}\left(\frac{x}{cos\left(x\right)}\right)$

$\int\left(\csc\left(2x\right)^6\right)dx$

$t^{-5}.\:t^{9\:}$