(资料图片)
1、P=>Q，属于P=>属于Q，故P是Q的子集P<=Q。
2、Q是P的子集P<=>Q. P，Q互为子集，即P=Q。
本文分享完毕，希望对大家有所帮助。
(资料图片)
1、P=>Q，属于P=>属于Q，故P是Q的子集P<=Q。
2、Q是P的子集P<=>Q. P，Q互为子集，即P=Q。
本文分享完毕，希望对大家有所帮助。
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