$\lim_{x\to\infty}\left(\cos\left(2\pi x\right)\right)$

$3\cdot\left(-2\right)+2$

$\int\left(\frac{1+\cos\left(c\right)}{\cos\left(c\right)}\right)dc$

$y=\left(\frac{a}{x}-\frac{b}{x^2}\right)$

$\int\left(2+3x\right)^4dx$

$\int2x\left(x^2+9\right)^5\:dx$

$3\csc^2\left(x\right)-4$