$\int e^{-1}dx$
$\int cos\left(\frac{1}{2}\right)dx$
$17.96\cdot32.22$
$\log\left(8f^3\right)-\log\left(2f\right)$
$0,8-1,4$
$16x^4+24x^2+9x$
$\frac{d^2}{dx^2}\left(\frac{x^2-1}{x^2+1}\right)$
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