$\lim_{x\to\infty}\left(e^{-2x}\cos\left(x\right)\right)$
$2879-579+753-978-897$
$x\left(2x^2+x+1\right)-\left(3x^3+4x^3+4x^2-2x\right)$
$\int\ln3\left(7x\right)xdx$
$y'=5x$
$\int\frac{\left(3y^3+13y+4\right)}{\left(y\right)\left(y^2+4\right)}dy$
$5-9x>7$
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