$cot\:u\:tan\:u-cos^2u=sin^2u$
$6.74\cdot1.98$
$y'=6x\sqrt{1-y^2}$
$\log_{1000}\left(x\right)=-\frac{2}{3}$
$\lim_{x\to0}\left(\frac{e^{2x}-e^{-2x}}{ln\left(x+1\right)}\right)$
$\int_1^2\left(\frac{1}{\left(x-2\right)^2}\right)dx$
$8x\ge-32$
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