$\lim_{x\to\frac{\pi}{2}}\left(\cos\left(2x\right)\right)^{-\frac{\pi}{2}}$
$9x^{6}-12x^{3}+4$
$\int\frac{1}{\left(27+\sqrt{4x^2-24x}\right)}dx$
$\int_0^x\sin\left(4x-y\right)dx$
$4\sqrt{6x^4}$
$v'=-\frac{\left(u\right)}{v}-\frac{v}{u}$
$\frac{5x}{x+1}\ge\:3$
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