[理工] 離散數學

作者: gsmzxcvbnm   2016-04-02 16:59:25


例15b的R有12,21怎麼還會是neither symmetric
作者: odanaga (PixiyON)   2016-04-02 17:37:00
for all都要有
作者: gsmzxcvbnm   2016-04-02 20:03:00
沒31抱歉腦殘了
作者: odanaga (PixiyON)   2016-04-02 20:17:00
^^

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