麻烦讲解下.(已经有答案)1.设集合A={x|x²+x-6=0},B={x|mx+1=0},B是A的真子集,则m的值所组成的集合是___ 【答案是{0,1/3,-1/2} 不理解的是:为什么有0呢?】2.集合S是{1,2,3,4,4}的子集,且若a∈S,必有
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![麻烦讲解下.(已经有答案)1.设集合A={x|x²+x-6=0},B={x|mx+1=0},B是A的真子集,则m的值所组成的集合是___ 【答案是{0,1/3,-1/2} 不理解的是:为什么有0呢?】2.集合S是{1,2,3,4,4}的子集,且若a∈S,必有](/uploads/image/z/1742735-47-5.jpg?t=%E9%BA%BB%E7%83%A6%E8%AE%B2%E8%A7%A3%E4%B8%8B.%EF%BC%88%E5%B7%B2%E7%BB%8F%E6%9C%89%E7%AD%94%E6%A1%88%EF%BC%891.%E8%AE%BE%E9%9B%86%E5%90%88A%3D%7Bx%7Cx%26sup2%3B%2Bx-6%3D0%7D%2CB%3D%7Bx%7Cmx%2B1%3D0%7D%2CB%E6%98%AFA%E7%9A%84%E7%9C%9F%E5%AD%90%E9%9B%86%2C%E5%88%99m%E7%9A%84%E5%80%BC%E6%89%80%E7%BB%84%E6%88%90%E7%9A%84%E9%9B%86%E5%90%88%E6%98%AF___+%E3%80%90%E7%AD%94%E6%A1%88%E6%98%AF%7B0%2C1%2F3%2C-1%2F2%7D+%E4%B8%8D%E7%90%86%E8%A7%A3%E7%9A%84%E6%98%AF%EF%BC%9A%E4%B8%BA%E4%BB%80%E4%B9%88%E6%9C%890%E5%91%A2%3F%E3%80%912.%E9%9B%86%E5%90%88S%E6%98%AF%7B1%2C2%2C3%2C4%2C4%7D%E7%9A%84%E5%AD%90%E9%9B%86%2C%E4%B8%94%E8%8B%A5a%E2%88%88S%2C%E5%BF%85%E6%9C%89)
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