logx(2又根号2开四次方)=5/4,求x的值,
问题描述:
logx(2又根号2开四次方)=5/4,求x的值,
答
2又根号2开四次方
=2×2^1/4
=2^5/4
∴logX(2^5/4)=5/4,
∴X>0,且X≠1.