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已知不等式x^2+ax+1<0的解集為空集,則實數a的取值範圍為[-2,2]。已知不等式x^2+ax+1<0的解集為空集,則實數a的取值範圍為[-2,2]。已知不等式x^2+ax+1... |
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已知等比數列{a_n }的各項均為正數，且2a_1+3a_2=1，a_32=9a_2 a_6，則數列{a_n }的通項公式為a_n=1/3^n 。設b_n=log_3〖a_1 〗+log_3〖a_... |
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If you leave me, please don't comfort me because each sewing has to meet stinging pain. |
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If you leave me, please don't comfort me because each sewing has to meet stinging pain. |
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If you leave me, please don't comfort me because each sewing has to meet stinging pain. |
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If you leave me, please don't comfort me because each sewing has to meet stinging pain. |
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| 本吧共有主題數5531個，帖子數19606篇，游泳的人數29位。 |
