推 znmkhxrw : 給你hint 如果你很急再站內我 10/02 17:12
→ znmkhxrw : Hint:證 B compact(用到A-Z), I conti.(用到B bdd) 10/02 17:13
→ znmkhxrw : 之後連續函數作用在compact set上...blabla 10/02 17:14
→ Erofen : 謝謝你!! 10/04 09:44
Let B be contained in C([0,1],R), be closed bounded, and equicontinuous.
1
Let I : B→R definded by I(f) = ∫f(x)dx.
0
Show that there is g in B at which the vaulve of I is maximized.
這是我在marsden中看到的題目，但是花了一段時間還是沒有想出來...
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