$4\left(3s\right)$

$\frac{d}{dz}\left(e^x\sin\left(y\right)+e^y\sin\left(z\right)+e^z\sin\left(x\right)\right)$

$\int st^2dx$

$\lim_{x\to\infty}\left(\frac{in\left(1+\frac{1}{x}\right)}{in\left(a-\frac{1}{x}\right)}\right)$

$\lim_{x\to0}\left(\frac{a}{x+dx}\right)$

$3b-5b-2b+b$

$\left(x^{14}\right)^3$