[微積] 一題高微證明
f twice differentiable on (a,b)
there are point x1<x2<x3 in (a,b) such that f(x1)>f(x2) f(x3)>f(x2)
prove that exist point c in (a,b) such that f''(c) > 0
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05/16 00:04, , 1F
05/16 00:04, 1F
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05/16 00:07, , 2F
05/16 00:07, 2F
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