5. Given the functionx + y + 2,1 or y 1-2,if x 1 and y # 1.Show that fx(1, 1) and fy(1, 1) exist and but f is not differentiable at (1,1).f(x, y)-if x =

Answered: Image /qna-images/answer/a76db852-a54d-4cfb-b5dd-b285571d2b9c.jpg

Answered: 5. Given the function x+y+2, if x = 1…

5. Given the function x+y+2, if x = 1 or y = 1 2, if x 1 and y # 1. Show that fe(1, 1) and fy(1, 1) exist and but f is not differentiable at (1,1). f(x, y) -

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter9: Multivariable Calculus

Section9.3: Maxima And Minima

Problem 28E

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Question

5. Given the function
x + y + 2,
1 or y 1
-
2,
if x 1 and y # 1.
Show that fx(1, 1) and fy(1, 1) exist and but f is not differentiable at (1,1).
f(x, y)
-
if x =

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