作者sphereheart (sphere)
看板trans_math
标题[考古]请问 台联大94证明第一题
时间Sat May 19 16:45:55 2007
Let f:R→R be twice differentible. If f'' is nowhere vanishing,
then f has at most two distinct real roots.
请问各位高手这题要怎麽证阿?
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