a=(-1/2)^(-2/3)=1/[(-1/2)^(2/3)]=1/[(1/2)^(2/3)]=1/[(1/4)^(1/3)]=4^(1/3) ( 4的1/3次方,或者说3次根号4)b=㏒(1/3) (1/2) 1/3和1/2分别写成3^-1 和2^-1的形式,则=㏒3 2 (㏒以3为底2的对数)a>b希望能帮到您,...