若log2(x)=log3(y)=log5(z)
问题描述:
若log2(x)=log3(y)=log5(z)
答
若log2(x)=log3(y)=log5(z)<0
0<x,y,z<1
令若log2(x)=log3(y)=log5(z)=a<0
x=2^a ,y=3^a ,z=5^a