$3x^2+3x^2a^2-4y-4a^2y$

$\lim_{x\to0}\left(\left(\frac{x^2+2sin\left(x\right)}{x}\right)\right)$

$\frac{dy}{dx}=-6$

$\frac{\sin\left(x\right)}{\sin\left(90-x\right)}\tan\left(x\right)\csc\left(x\right)$

$\int_0^{\infty}\left(\frac{3x^{-4}e^{-x^{-3}}}{1+e^{-x^{-3}}}\right)dx$

$\int\left(\frac{1}{3}x^5-6+x\right)\:dx$

$\int\left(\frac{-58}{\left(3t+2\right)^2}\right)dt$