$cos=-\frac{5}{4}$
$\int_0^{\infty}\left(\frac{3x^{-4}e^{-x^{-3}}}{1+e^{-x^{-3}}}\right)dx$
$\int\frac{2}{x\sqrt{25x^2-64}}dx$
$\left|\left(x^2\right)^2\right|^2$
$29.8-72.32$
$\int\left(x^3+7x-1\right)\left(9x^2+21\right)dx$
$\int y^2\cdot\cos\left(y\right)dy$
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