a. 14. Suppose A is a real n x n matrix. What is the definition for A being positive definite? b. Suppose f:R” R is smoo
Posted: Thu May 12, 2022 10:33 am
a. 14. Suppose A is a real n x n matrix. What is the definition for A being positive definite? b. Suppose f:R” R is smooth. What is the gradient of f? What significance does the gradient have? C. Suppose f:R” → R is smooth. What does it mean so say that u € R” is a critical point of f? d. Suppose f:R” R is smooth. What is f"(x). What special property does it have? e. Suppose f:RN R is smooth, and u E R™ is a critical point of f. Explain how to use determinants of principle minors of A = f'(u) to classify this critical point of f as either a place where f has a local minimum or a local maximum.