$\lim_{x\to0}\left(\frac{lnx}{2x^{-2}}\right)$
$\int-4x\cdot\cos\left(4x\right)dx$
$2x^3+8x+8$
$\left(\cos\left(x\right)\cos\left(y\right)-\tan\left(x\right)\right)dx-\sin\left(x\right)\sin\left(y\right)dy=0$
$\left(5^{-2}\cdot4^{-4}\right)^{-2}$
$-45+7+40+-13+-16+8$
$\left(l\cdot sin\left(q\right)+t\cdot sin\left(q+k\right)\right)^2$
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