Question

Problem 1. Please note a correction: A matrix is positive definite if all its lead- ing principal minors are positive and negative definite if the principal minor:s alternate in sign, starting with negative. I got confused and wrote the other way in class on Wednesday. It was a mistake Provide formulas/rules for each of the following: State the necessary and sufficient conditions for maximizing a function with more than two variables. State the necessary and sufficient conditions for minimizing a function with more than two variables.

Answer 1

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了 Con le