$\lim_{x\to\sqrt{\pi}}\left(\frac{\sin\:\left(x^2\right)}{x-\sqrt{\pi}}\right)$

$\int\frac{5}{cos^2x}dx$

$\frac{1}{9\cos^2\left(x\right)}-\frac{\sin\left(x\right)}{\left(-6\sqrt{3}\right)\cos\left(x\right)}$

$\left(+3\right).\left(-9\right)$

$\left(-9x^{2}y-12y^{3}\right)^{3}$

$-11+14-15-9+10-8-11-3$

$\int_4^76xdx$