$\lim_{h\to0}\left(\frac{5arcsin\left(\frac{2}{3}+h\right)-arcsin\left(\frac{2}{3}\right)}{h}\right)$
$\lim_{x\to2}\left(\frac{x^2+x-6}{x+3}\right)$
$\sin^2b+\csc b\cdot\tan b$
$x-35=-27$
$\int x\sqrt{x^2+5}.dx$
$-\frac{284}{-2}$
$\int x\:tg^2\left(x^2\right)dx$
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