$5x^2y+3y^2z-2xz;\:x=-2;\:y=-4\:z=4$
$\left(3x-\frac{5}{6}\right)^2$
$-\left(8.2r+3s+4\right)$
$\frac{dy}{dx}=0.05x$
$\int\sec^{3}\thetad\theta$
$\:sin^4\theta\:=\frac{3}{8}-\frac{1}{2}cos2\theta\:+\frac{1}{8}cos\:4\theta\:$
$4q+7+2$
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