$9\int sen\left(in\left(7x\right)\right)dx$

$\left(.485\sqrt{1.00602176}+6.25\ln\left(0.0776+\sqrt{1.00602176}\right)\right)$

$-24\:-\:34\:+\:76\:-\:28$

$\frac{c}{a}+\frac{d}{a},\:a=2,\:b=4,\:c=3,\:d\:=-25$

$\lim_{x\to infinity}\left(\frac{e^{x^2}}{1-x^2}\right)$

$-0.054+0.012$

$\lim_{x\to1}\left(-x\right)\:\left(8x^2\:+2x-5\right)$