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看板trans_math作者victor7935 (victor)時間17年前 (2008/11/09 19:07)推噓0(0推 0噓 12→)

留言12則, 4人參與討論串1/2 (看更多)

1. If f'(X)=0 at x=1,x=2,x=3,then f cannot possibly increase on[0,4]. 這是對的!!...簡單證明 2. Show that cosx < 1 - (1/2)x^2 + (1/24)x^4 for all x >0. 3. Show that the equation P(x)=0 has exactly two real roots, both positive. P(x)= x^4 - 8x^3 + 22x^2 - 24x + 4 4.Prove that a polynomial of degree n has at most n-1 local extreme values. 5.Let f be differentiable on an open interval I.Prove that,if f'(x) = 0 for all x in I,then f is constant on I. 感覺..... 這些問題感覺對大家來說都很簡單!? 有時候都不知道該不該問了= = .... 自己好像還想得不夠多.... -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.123.221.147

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Qmmm

11/09 19:33, , 1^F

11/09 19:33, 1^F

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victor7935

11/09 19:45, , 2^F

11/09 19:45, 2^F

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victor7935

11/09 19:47, , 3^F

11/09 19:47, 3^F