已知M={2log²1/2^x-11log2^x+9≤0},求x∈M时.f(x)=log2^(x/2)×log(1/2)^(8/x）的最值

已知M={2log²1/2^x-11log2^x+9≤0},求x∈M时.f(x)=log2^(x/2)×log(1/2)^(8/x）的最值
已知M={2log²1/2^x-11log2^x+9≤0},求x∈M时.f(x)=log2^(x/2)×log(1/2)^(8/x）的最值

已知M={2log²1/2^x-11log2^x+9≤0},求x∈M时.f(x)=log2^(x/2)×log(1/2)^(8/x）的最值
M={2log²1/2^x-11log2^x+9≤0},
2log²1/2^x-11log2^x+9≤0
2 -9
X
1 -1
（2lg²1/2^x-9)(log²1/2^x-1)