$\lim_{t\to0}\left(\frac{\sin\left(2t\right)}{t}\right)$
$\int-3x\cdot\sin\left(8x\right)dx$
$\frac{x^4+1}{x^2}$
$cos\left(3x\right)cos\left(2x\right)\:+\:sin\left(3x\right)sin\left(2x\right)$
$3y+y-5y$
$10m^2-26m-12$
$\frac{dy}{dx}=\left(x+3\right)^2$
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