Re: [請益] 一題國中不等式數學
※ 引述《luuawa (窗邊的小荳荳)》之銘言:
: 1、設n為一整數,若n<1/100+1/101+1/102+1/103...+1/300<n+1,則n=?
: 我算出n=1
公式是不知道啦~
不過y =1/x
∫ydy=∫dx/x==============㏑300/100=㏑3=1......
從100~300
如果用看的是一下子就看出來了
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