$\frac{dr}{dq}=100\sqrt{q}+20q$
$3.77\cdot2.375$
$y=-\frac{6}{x^3}+\sin\left(\pi x\right)$
$4ydy=xdx$
$\frac{\frac{1}{5}-\frac{1}{5}}{5-5}$
$64x^4-36y^8$
$\int8x\left(2x^2+1\right)^3dx$
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