$\int\frac{\left(cos\left(2x\right)\right)}{1+sen\left(2x\right)}dx$
$48-5^2$
$dy\left(x+4y\right)=\left(2x-y\right)dx$
$0.08-1$
$2^2\sqrt{4}\left(\frac{6}{3}-1\right)$
$\left(\left(mn\:-\:n\right)\left(xz\:+\:pn\right)\right)$
$\frac{dy}{dt}=ry\left(t\right)$
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