$\left(-45-65\right):\left(-15+34-8\right)$
$\int\:4arcsen\left(3x\right)dx$
$-3+4+5-6-9+1-2$
$\int\frac{\left(\sqrt{x}-1\right)^3}{x}\:dx$
$88\::\:-1$
$\frac{dy}{dx}=\frac{2xy}{1+x^2}=\frac{1}{\left(1+x^2\right)^2}$
$\int\sqrt{r^2+z^2}dr$
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