$\frac{v^3}{3}=e^x+c$
$\int\frac{2-x^2}{\sqrt{4-x^2}}dx$
$\tan2x=\frac{\sqrt{3}}{3}$
$\lim_{x\to0}\left(\frac{8x+sin\left(x\right)}{9x+cos\left(x\right)}\right)$
$5x^2\:\left(8x+5\right)^2$
$sec^2k=1+tan^2k$
$7a-4b+5\:-7a+4a-6c$
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