$\lim_{x\to0}\left(\left(1+tan\left(x\right)\right)^{\frac{1}{x^2}}\right)$
$7+11.2\left(11-7\right)$
$\cot\left(x-\frac{\pi}{2}\right)=-tan\left(x\right)$
$\sqrt[3]{6^{12}}$
$2x^2\:-5x+2=0$
$\lim_{x\to0}\left(\cos\left(3x\right)\right)^{\frac{2}{x}}$
$25x^2+20$
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