作者vnn (^^)
看板trans_math
标题[考古] 中山
时间Fri Jul 8 11:33:42 2005
请问两题....
n 1
1.limΣ ------------------ =?
n->∞ (4n^2-k^2)^(1/2)
2. let 1-cosx
---------if x=/=0
x
f(x)=
0 if x=0
prove that f is differentiable on R,and f'(x)=?
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1F：推 amymayyam:第一题前面我问过140.127.179.227 07/08
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3F：推 amymayyam:可是忘记在哪问了耶 抱歉140.127.179.227 07/08