$\frac{1}{2}\:2\int_{\frac{11\pi}{18}}^{\pi}\left(\left(-4\cos\left(x\right)^2-\left(1-\cos\left(x\right)^2\right)\right)\right)dx$

$10^3\cdot10d^{15}$

$\frac{2}{7}x+3\le-\frac{1}{2}x-3$

$\int8sen\left(8x\right)dx$

$6\sqrt{2x^3y}+2x^6+9y^2$

$\frac{x+3}{x-4}>1$

$\csc^2x+4\csc x-12=0$