
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Transcribed Image Text:Əf Əf
Әх' ду
f(x, y) = 3(x² + y2) log(x2 + y2), (x, y) ≠ (0, 0)
3x(log(x2+y2) + 1)
Find
af
Әх
=
for the following.
af
- +1)
3y(log(x² + y2) +
ду
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