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Let  f (x, y)  =  (x − 9) ln(xy). (a) Find the the critical point (a, ...

Let  f (x, y)  =  (x − 9) ln(xy).
(a) Find the the critical point (a, b). Enter the values of a and b (in that order) into the answer box below, separated with a comma.
(b) Classify the critical point.

(A) Inconclusive (B) Relative Maximum (C) Relative Minimum (D) Saddle Point
Math   Calculus   
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