Let f be a function of two variables such that and f(2,1)= 4. f(x, y) = <3x² - 3y, - 3x + 3y²> af a. If, in addition, x = r cos t and y = r sin t, find the value of when (r,t) = (2,7). at b. Use the linearization of f at (2,1) to estimate the value of f(2.02, 0.99). C. Find the critical points of f, and determine if f has a relative maximum, a relative minimum, or a saddle point at each critical point.
Let f be a function of two variables such that and f(2,1)= 4. f(x, y) = <3x² - 3y, - 3x + 3y²> af a. If, in addition, x = r cos t and y = r sin t, find the value of when (r,t) = (2,7). at b. Use the linearization of f at (2,1) to estimate the value of f(2.02, 0.99). C. Find the critical points of f, and determine if f has a relative maximum, a relative minimum, or a saddle point at each critical point.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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