比大不的找中间数
①2^0.3,0.3^2,log2为底0.4
2^0.3>1>0.3^2>0=log2(1)>log2(0.4)
②log1/2为底0.4,lg0.4,log2为底0.4
log1/2为底0.4=log2为底2.5 (0.4的-1次方)>log2(0.4)>lg0.4
lg(lgx),lg^2为底x,lgx^2
1<x<10
0
比大不的找中间数
①2^0.3,0.3^2,log2为底0.4
2^0.3>1>0.3^2>0=log2(1)>log2(0.4)
②log1/2为底0.4,lg0.4,log2为底0.4
log1/2为底0.4=log2为底2.5 (0.4的-1次方)>log2(0.4)>lg0.4
lg(lgx),lg^2为底x,lgx^2
1<x<10
0