log[log3 (log2 x)]=0,那么x^1/2等于?
问题描述:
log[log3 (log2 x)]=0,那么x^1/2等于?
log后面第一个是底数,第二个是真数.
答
∵log[log3 (log2 x)]=0 ==>log3 (log2 x)=10^0=1
==>log2 x=3^1=3
==>x=2³=8
∴x^1/2=√8=2√2.