Mathematics
Undergraduate
解析学の偏微分の範囲の問題です。
解き方を教えてください🙇♀️
問2. 関数
f(x,y)=
xy(x² - y²)
x2+y2
0
に対し、
(a) (0,0)とfy(0, 0) を求めよ.
(b) fry(0,0)とfyェ (0, 0) を求めよ.
(x,y) ≠ (0,0)
(x,y) = (0,0)
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