6) f(x, y) = 2xy - 7x - 3y 21 2 A) f B) f C) f D) f 3 2'2 2 N/W 3 NN 2 == == NI 3 7 2 = saddle point 21, local minimum; f 63 2 21 -2=-2/2 == local maximum 2' 2 saddle point; = 21 2 (-23) -- ² 21, 2'2 local minimum saddle point

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point

6) f(x, y) = 2xy - 7x - 3y
A) 2-2--21, saddle point
f
==
B) f
C) f
2'
3
-3
2' 2
-
=
21
3
63
2' 2 2
2
==
, local minimum;
21
D)√2-2=-27, saddle point,
f
2'
local maximum
लाते
NN
22
3
(-21)-
2'
||
==
21
2
21, local minimum
2
, saddle point
Transcribed Image Text:6) f(x, y) = 2xy - 7x - 3y A) 2-2--21, saddle point f == B) f C) f 2' 3 -3 2' 2 - = 21 3 63 2' 2 2 2 == , local minimum; 21 D)√2-2=-27, saddle point, f 2' local maximum लाते NN 22 3 (-21)- 2' || == 21 2 21, local minimum 2 , saddle point
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