[張爸]

[topractise (連月亮都幫我!)]

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Let w(x,y) = g(r) , where r =√x^2 + y^2   and g(r) , r > 0 is a function


使得 g''(r) is continuous, Assume (a) Wxx + Wyy = 0 , for all (x,y)≠(0,0)

(b) g(1) = 0 , g'(1) = 1 . Find function g(r)

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◆ From: 59.112.27.113
推 yuyumagic424:張爸晚安
推 biox:√x^2  = x ？
※ 編輯: topractise      來自: 59.112.29.41         (07/05 23:12)