作者linda1218 (linda)
看板trans_math
标题[考古] 92台大A
时间Mon Apr 14 02:21:44 2008
1. f(x)=x^a sin(1/x) for x is not equal to 0
f(x)=0 for x is equal to 0
find the interval of a such that f'' is continuous everythere.
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