Rule 4: Quotient Rule

Quotient Rule

Recipe: $\frac{\left(\mathit{low}\right)\left(\mathit{dhi}\right)\mathit{–}\left(\mathit{hi}\right)\left(\mathit{dlow}\right)}{{\left(\mathit{low}\right)}^2}$

Read: Low–D-Hi-Minus-Hi–D-Low-All Over-Low-Squared

dhi means the derivative of the hi piece.

dlow means the derivative of the low piece.

Note : Unlike the product rule this recipe cannot be reordered.