$\lim_{x\to-0.01}\left(\frac{sen2x}{x}\right)$

$\left(-63\right)\left(-115\right)$

$\lim_{x\to0}\left(\frac{cos\left(x\right)-1+\frac{x^2}{2}}{11x^4}\right)$

$\sin\left(8\right)\frac{x}{15}$

$csc=\frac{1}{3}$

$\int_0^{\frac{5\pi}{2}}\left(\cos\left(x\right)\right)dx$

$\left(8x^5-16x^4+20x^3-11x^2+3x+2\right):\left(2x^2-3x+2\right)$