$1-\frac{\cos^2a}{1+\text{sina}}=\text{sina}$
$\int\left(2\ln\left(x+2\right)\right)dx$
$23,5\cdot7,54$
$\log\left(3\cdot x\cdot e^{-x}\right)$
$4x^4-\:64$
$\int^6\left(4+2\sqrt{x}\right)dx$
$\frac{3x}{\sqrt{2}}$
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