Question Number 181015 by Mastermind last updated on 20/Nov/22
$$\mathrm{If}\:\mathrm{z}=\mathrm{xy}−\mathrm{7x}+\mathrm{4y},\:\:\:\mathrm{evaluate}\:\frac{\partial\mathrm{z}}{\partial\mathrm{x}\:}\:\mathrm{and}\:\frac{\partial\mathrm{z}}{\partial\mathrm{y}} \\ $$$$ \\ $$$$. \\ $$$$ \\ $$
Answered by CrispyXYZ last updated on 20/Nov/22
$$\frac{\partial\mathrm{z}}{\partial\mathrm{x}}=\mathrm{y}−\mathrm{7},\:\:\frac{\partial\mathrm{z}}{\partial\mathrm{y}}=\mathrm{x}+\mathrm{4} \\ $$