设p:实数x满足x^2-4ax+3a^2

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设p:实数x满足x^2-4ax+3a^2
设p:实数x满足x^2-4ax+3a^2

设p:实数x满足x^2-4ax+3a^2
依题意 ,p :(x-a)(x-3a)非p,它的逆否形式为p==>q成立,所以A是B的子集.
所以当(3a,a)是x

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