[計量] PP看到的題目~請大家幫忙一下~謝謝
The function f is defined for all positive intergers n by following rule:
f(n)is the number of positive intengers each of which is less than n
and has no positive factor in common with n other than 1
If p is any prime num.
f(p)=?
1.p-1
2.p-2
3.p+1/2
4.p-1/2
5.2
我看不懂題目~~當然也就不會算!!>"<
希望各位大大能給我解答呀!!
不好意思~這是我第一次在這po問題~~希望大家互相幫忙唷~~
謝謝~
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