log2X=- 2/3 求X logx(3+2根号2)=-2求X

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log2X=- 2/3 求X logx(3+2根号2)=-2求X

log2X=- 2/3 求X logx(3+2根号2)=-2求X
log2X=- 2/3 求X logx(3+2根号2)=-2求X

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2-1

log2X=- 2/3 求X
2X= 1/10^(2/3)
X= 1/[2*10^(2/3)]
logx(3+2根号2)=-2求X
logx(3+2√2)=-2
x^(-2)=3+2√2
x=±√(3-2√2)