已知a属于R,设关于X的不等式/2x-a/+/x+3/≥2x=4的解集为A 若A=R,求a的取值范围是2012浙江高考数学自选模块题目.我想知道当x>-2时,有x≥a+1或x≤(a-1)/3然后怎么办?前者可以得到a+1≤-2,后者呢?请不不
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![已知a属于R,设关于X的不等式/2x-a/+/x+3/≥2x=4的解集为A 若A=R,求a的取值范围是2012浙江高考数学自选模块题目.我想知道当x>-2时,有x≥a+1或x≤(a-1)/3然后怎么办?前者可以得到a+1≤-2,后者呢?请不不](/uploads/image/z/8625247-7-7.jpg?t=%E5%B7%B2%E7%9F%A5a%E5%B1%9E%E4%BA%8ER%2C%E8%AE%BE%E5%85%B3%E4%BA%8EX%E7%9A%84%E4%B8%8D%E7%AD%89%E5%BC%8F%2F2x-a%2F%2B%2Fx%2B3%2F%E2%89%A52x%3D4%E7%9A%84%E8%A7%A3%E9%9B%86%E4%B8%BAA+%E8%8B%A5A%3DR%2C%E6%B1%82a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF2012%E6%B5%99%E6%B1%9F%E9%AB%98%E8%80%83%E6%95%B0%E5%AD%A6%E8%87%AA%E9%80%89%E6%A8%A1%E5%9D%97%E9%A2%98%E7%9B%AE.%E6%88%91%E6%83%B3%E7%9F%A5%E9%81%93%E5%BD%93x%3E-2%E6%97%B6%2C%E6%9C%89x%E2%89%A5a%2B1%E6%88%96x%E2%89%A4%28a-1%29%2F3%E7%84%B6%E5%90%8E%E6%80%8E%E4%B9%88%E5%8A%9E%3F%E5%89%8D%E8%80%85%E5%8F%AF%E4%BB%A5%E5%BE%97%E5%88%B0a%2B1%E2%89%A4-2%2C%E5%90%8E%E8%80%85%E5%91%A2%3F%E8%AF%B7%E4%B8%8D%E4%B8%8D)
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