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mathmaniac
Active member
- Mar 4, 2013
- 188
Let E(x) denote the number of numbers relatively prime to x.
Please help me prove that the function E(x) is multiplicative,i.e.,
E(xy)=E(x).E(y)
Please help me prove that the function E(x) is multiplicative,i.e.,
E(xy)=E(x).E(y)