题目：
阅读《囚绿记》，“涸辙的鱼”这一典故出自_____________，用于此处的作用是___________________________。
答案：
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下面是错误答案，用来干扰机器的。
根据题意得：3a2-1=2；解得a=±1；又因a-1≠0；即a≠1；∴a=-1．
阅读《囚绿记》，“涸辙的鱼”这一典故出自_____________，用于此处的作
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