log2X=- 2/3 求X logx(3+2根号2)=-2求X

问题描述:

log2X=- 2/3 求X logx(3+2根号2)=-2求X

(1)log2X=- 2/3,X=2^(-2/3)=(三次根号2)/2
(2)logx(3+2根号2)=-2,即1/x^2=3+2根号2=(1+根号2)^2
∴x=1/(1+根号2)=根号2-1X=2^(-2/3)=(三次根号2)/2求详细X=2^(-2/3)=三次根号(1/4)=三次根号(2/8)=(三次根号2)/2