$\int\left(\frac{x}{x^2+4x+13}\right)dx$
$\frac{dy}{dx}=\frac{2x}{\left(y-x^2y\right)}$
$\frac{1}{1-\sin x}-\frac{1}{\cos x}=\tan\left(x\right)$
$\int\left(2x+3\right)ln\left(x+1\right)dx$
$2^2.2^3$
$\frac{-3}{-3}$
$\frac{sec\:x\:sin\:x}{tan\:x+cot\:x}=sin^2x$
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