1 设A={X〕-2≤X≤a},B={Y〕Y=2X+3,X∈A},C={Z〕Z=X的平方,X∈A},若C是B的子集,求实数a的取值范围 2 全集U={1,2,3,4,5},A={X〕X的平方-5qX+4=0}若A在U的补集中有4个元素,求A在U的补
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![1 设A={X〕-2≤X≤a},B={Y〕Y=2X+3,X∈A},C={Z〕Z=X的平方,X∈A},若C是B的子集,求实数a的取值范围 2 全集U={1,2,3,4,5},A={X〕X的平方-5qX+4=0}若A在U的补集中有4个元素,求A在U的补](/uploads/image/z/12686010-42-0.jpg?t=1+%E8%AE%BEA%EF%BC%9D%EF%BD%9BX%E3%80%95-2%E2%89%A4X%E2%89%A4a%EF%BD%9D%2CB%EF%BC%9D%EF%BD%9BY%E3%80%95Y%EF%BC%9D2X%2B3%2CX%E2%88%88A%EF%BD%9D%2CC%EF%BC%9D%EF%BD%9BZ%E3%80%95Z%EF%BC%9DX%E7%9A%84%E5%B9%B3%E6%96%B9%2CX%E2%88%88A%EF%BD%9D%2C%E8%8B%A5C%E6%98%AFB%E7%9A%84%E5%AD%90%E9%9B%86%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4+2+%E5%85%A8%E9%9B%86U%EF%BC%9D%EF%BD%9B1%2C2%2C3%2C4%2C5%EF%BD%9D%2CA%EF%BC%9D%EF%BD%9BX%E3%80%95X%E7%9A%84%E5%B9%B3%E6%96%B9%EF%BC%8D5qX%2B4%EF%BC%9D0%EF%BD%9D%E8%8B%A5A%E5%9C%A8U%E7%9A%84%E8%A1%A5%E9%9B%86%E4%B8%AD%E6%9C%894%E4%B8%AA%E5%85%83%E7%B4%A0%2C%E6%B1%82A%E5%9C%A8U%E7%9A%84%E8%A1%A5)
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