10^x/2=根号3,10^y/3=2^2/3,则10^x-y等于?
问题描述:
10^x/2=根号3,10^y/3=2^2/3,则10^x-y等于?
答
10^(x/2)=3^(1/2) 10^x=3 (1)
10^(y/3)=2^(2/3) 10^y=4 (2)
(1)/(2) 10^(x-y)=3/4