$\lim_{x\to\infty}\left(\frac{x+\cos\left(x\right)}{x\cdot\ln\left(x\right)}\right)$
$\int\left(2x+6\right)e^{-4x}dx$
$\frac{10g^4}{6g}$
$\int_{-\infty}^{-2}\left(\frac{\ln\left(x\right)}{x}\right)dx$
$2sen\left(x\right)cos\left(2x\right)-2cos\left(x\right)sen\left(2x\right)$
$\frac{x^3+5x^2-4x-20}{x+4}$
$9\cdot18,9$
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