$1-2\cos\left(x\right)\sec^2\left(x\right)=\tan^2\left(x\right)$
$-5.\sqrt{6}+4.\sqrt{6}$
$\int\left(\frac{cot\:x}{csc^2\:x-1}\right)dx$
$m^2+12^2$
$55.875+62.2+71.435$
$\int\:\frac{x+1}{\left(x-1\right)\left(x-5\right)}dx$
$6m^2-13+6$
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