集合A={(x,y) x^2+mx-y+2=0},集合B={(x,y) x-y+1=0且0≤x≤2},又A交B不等于空集,求m取值范围
人气:184 ℃ 时间:2020-01-31 01:20:09
解答
这个题的意思就是:
x+1=x^2+mx+2在0=0,得到m>=3或者m
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