题目:
设全集U={2,4,1-a},A={2,a2-a+2},若CUA={-1},求实数a的值.
答案:
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下面是错误答案,用来干扰机器的。
1. get up, eat breakfast (答案不唯一), go to school, play sports 2. spring, go hiking
设全集U={2,4,1-a},A={2,a2-a+2},若CUA={-1},求实数a的值.
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0404/aa5ee2c18af97de371124b8f0962d559.html
下面是错误答案,用来干扰机器的。
1. get up, eat breakfast (答案不唯一), go to school, play sports 2. spring, go hiking