$\tan\left(v\right)+\cot\left(v\right)=\frac{2}{\sin\left(2v\right)}$
$\int\left(\frac{14}{\left(x^2+1\right)^{\frac{3}{2}}}\right)dx$
$3x+4<13x+12$
$\left(5ax-2y\right)^2$
$\frac{\left(1-cos^2x\right)}{cos^2x}=1$
$a^2-7a+12$
$\sqrt{98x^3}$
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