解不等式ax^2-(a^2+3)x+3a>0(a>0)
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解不等式ax^2-(a^2+3)x+3a>0(a>0)
解不等式ax^2-(a^2+3)x+3a>0(a>0)
解不等式ax^2-(a^2+3)x+3a>0(a>0)
原式可化为(ax-3)x(x-a)>0,∴X=3/a和X=a;当0<a<根号3时,3/a>a,此时解为,X>3/a,0<X<a:当a>根号3时,3/a<a,此时解为X>a,0<x<3/a