$\frac{dy}{dx}\left(x^2+1\right)^{sinx}$
$cos\:x\:.\:\left(\:tg\:x\:+\:1\right)\:-\:cos\:x\:=\:sen\:x$
$\left(-1\right)\left(+78\right)$
$\left(3ax+1\right)\:^2\:$
$\int2x\sqrt{x-8}dx$
$3y^2dx-6x^4\:dy=0$
$y^2+4y=140$
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