$\frac{3cot^{\left(3\right)}\left(x\right)}{csc\left(x\right)}$
$\tan^2\left(x\right)\cdot\cot\left(x\right)\cdot\sin\left(2x\right)$
$\lim_{x\to0}\left(\frac{4^x}{x^k}\right)$
$\int27x^2dx$
$-16x^{2}+54x-18$
$4^{\frac{1}{2}}+\sqrt{4^{2}+3^{2}}$
$-2\left(0\right)+1$
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