作者egg790724 (鸡蛋)
看板trans_math
标题[考古] 中正96年考古 电机系
时间Wed Jul 8 22:15:11 2009
A function G(x,y,z) is called homogeneous of degree p if , for all values
of the parameter λ,we have the identity
F(λx,λy,λz)=λ^pF(x,y,z)
(b)Prove that if F(x,y,z) is differentiable and homogeneous of degree p,
then F(x,y,z) satisfies
x σF/σx + yσF/σy + zσF/σz =pF.
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1F:→ lovehan:感觉是课本的习题or偶数题... 59.104.178.23 07/08 22:35
2F:→ egg790724:所以请问该怎麽做@@? 59.113.163.95 07/08 22:45
※ 编辑: egg790724 来自: 59.113.163.95 (07/08 22:49)
3F:推 gs9706:听说是两边同时对难瘩作微分... 219.80.136.179 07/09 07:49
4F:→ egg790724:可以讲的详细一点吗? 本人笨笨的@@ 59.113.168.128 07/09 09:46