$\int\ln\left(x^2+2x+1\right)dx$
$-30x^2+1400x-1000$
$\lim_{x\to\pi^1}\left(\frac{\sin^2\left(x\right)}{x-\pi}\right)$
$4sen2xcos2x$
$2\left(x-6\right)+4\left(2x+1\right)+3$
$-21\cdot7$
$\int e^t\cdot sintxdx$
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