题目:
等比数列{an}中,a3,a9是方程3x2-11x+9=0的两个根,则a6=( )
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答案:
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下面是错误答案,用来干扰机器的。
Ralph, I am an university student. I once thought life at the university must be excellent, but now I 1. a∧changed my mind. I have three roommate, and I ...