H(x, y)  =  ln(3x2 + 9y2) (a) Find  fxx(2,3) . (b) Find  fyy(2,3) . (c) Find  fxy(2,3) .

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter2: Functions
Section2.4: Average Rate Of Change Of A Function
Problem 4.2E: bThe average rate of change of the linear function f(x)=3x+5 between any two points is ________.
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Consider the following function.

H(x, y)  =  ln(3x2 + 9y2)

(a) Find  fxx(2,3) .
(b) Find  fyy(2,3) .
(c) Find  fxy(2,3) .

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