※ 引述《Kilikone (ヴァルキリー.レナス)》之銘言：
: 你得微積分期中考題目可不可以po一下或是寄來給我啊....
: 想參考一下說...........
1.Let f:[a,b]->R be a funtion.
(a)If f(c)>0 and f(x) is continuous at x=c屬於(a,b),show taht
(using "epzon-sigma")there is a sigma > such that f(x)>0
for all x屬於(c-sigma,c+sigma)
(b)Show that if f'(c) exists then f(x) is continuous at x=c
先一題好了
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