$\lim_{x\to0}\left(\left(\tan2x\right)^{3x+6}\right)$
$6sinxcosx=2$
$p=\:3x^3-1,4x\:+6yq\:=\:x^2\:-\:o,3x$
$13+\left(-18\right)+22\left(-11\right)$
$\lim_{x\to2}\left(\left(x^2+3x-4\right)\right)$
$2-4u+8u$
$\frac{1-\sec^{2}\alpha}{1-\csc^{2}\alpha}$
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