$2m\cdot2m$
$\:\int cos4x\:senx\:dx$
$\frac{8x^2+13x+5}{x+1}\:$
$2\sin\left(3\pi x\right)=\sqrt{2}$
$\int_{\sqrt{x}}^2\left(\frac{1}{y^2+1}\right)dy$
$\lim_{x\to0}\left(\frac{e^{ax}-e^{bx}}{\sin\left(ax\right)-\sin\left(bx\right)}\right)$
$6x^2+9x+12$
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