$\lim_{x\to0}\left(\frac{0.5x}{\sin\left(0.5x\right)}\right)$
$\frac{cos^2xtan^2\left(-x\right)-1}{cos^2x}$
$2314,21+281,982$
$\int6y\:dx$
$\an\left(\theta-\pi\right)$
$\left(6^2+6^2\right)$
$\int_0^{-\frac{\pi}{2}}\left(x^2\cos\left(x\right)\right)dx$
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