$sin\:2x\:=\:0,5\:$
$\frac{dy}{dx}+4y=x^2e^{-4x}$
$\frac{dx}{dt}=\frac{4}{x}$
$15-3-\left(-15\right)$
$12\sin\left(x\right)+6=0$
$\int\frac{\left(9e^x+6e^{-x}\right)}{\left(9e^x-6e^{-x}\right)}dx$
$\left(4x^2+3x^2y^3\right)dx+3x^3y^2dy=0$
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