Method of Lagrange Multipliers (Trench) Last updated Nov 10, 2020 Save as PDF The Method of Least Squares Regression (as an Application of Optimization) 1: Introduction to Lagrange Multipliers Page ID17314 William F. TrenchTrinity University ( \newcommand{\kernel}{\mathrm{null}\,}\) 1: Introduction to Lagrange Multipliers2: Extrema Subject to One Constraint3: Constrained Extrema of Quadratic Forms4: Extrema Subject to Two Constraints5: Proof of Theorem 16: Exercises