命题改写p,q形式.
把下列命题写成"若p则q"的形式并且判断命题真假.
①当ac>bc时,a>b;②已知x,y为正整数,当y=x+1时,y=3,x=2.
人气:302 ℃ 时间:2020-05-23 02:46:48
解答
①当ac>bc时,a>b
;若ac>bc,则a>b.(假,c6(-1) )
②已知x,y为正整数,当y=x+1时,y=3,x=2.
若x,y为正整数满足:y=x+1.则y=3,x=2.(假,y=2,x=1)
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