两边取以2为底的对数
log2 x^(log2 x)=log2 32x^4
(log2 x)*(log2 x)=log2 32+log2 x^4
(log2 x)^2=4log2 x+log2 2^5
(log2 x)^2-4log2 x-5=0
(log2 x-5)(log2 x+1)=0
log2 x=5,log2 x=-1
x=32,x=1/2