Sequences & Series (id: 215b82b09)

本题目来源于试卷: Sequences & Series，类别为 IB数学

[填空题]
The third term of anxec *e-zx63-ewgi 5sf arithmetic sequence is equal to 7 and the sum of the firstraimsv(9,hh - 8 terms is 20 .v,ms9 h(hr-i a Find the common difference and the first term.   

参考答案: 13±2%


本题详细解析:

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