$\frac{\sin\left(x\right)}{1+\cos\left(x\right)}+\frac{1+\cos\left(x\right)}{\sin\left(x\right)}=0$
$997-2004$
$\left(3\sqrt{5}\right)\left(2\sqrt{5}\right)$
$-985-618$
$\int9tan^2\left(x\right)sec^2\left(x\right)dx$
$\frac{4x^2-9}{2x-3}$
$\int m^{2x}dx$
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