$\frac{dy}{dx}=\frac{1}{e^x+e^{-x}}$
$-6\cdot\left(-7\right)\cdot2\cdot5$
$\int3x\left(3x^2+7\right)dx$
$\cos3\cos1+\sin3\sin1$
$\frac{dy}{dx}=\frac{x}{1+x+y+xy}$
$2m^2\:2m^3$
$\int14xe^{12x}dx$
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