$ \huge \begin{align*} y &= \frac{f(x)}{g(x)} \\ y' &= \frac{f'(x)g(x)-f(x)g'(x}{g'(x)^2} \end{align*}$ >[!quote] Mnemonic "*dafuck? fuck doug, guh guh*" $\huge\to \frac{(df)g-f(dg)}{gg}$ ![[../../00 Excalidraw/Quotient Rule .excalidraw]]