Summary of mathematics 3 (the mathematical tools ...
https://www.studeersnel.nl/nl/document/wageningen-university-research/...How to find stationary points of f(x , y) 1. Compute fx(x, y): differentiate f(x , y) with respect to x, assuming y constant 2. Compute fy(x , y): differentiate f(x , y) with respect to y, assuming x constant 3. Find x , y that solve the system of equations: {fx(x, y)= 0 fy(x , y)= 0 4.