If the ratio of the sum of the first n terms of two arithmetic sequences is (2+3n) : (3+2n) , find the ratio of their seventh terms
thanks
sequence QQQ
2008-09-13 9:22 pm
回答 (1)
2008-09-13 10:45 pm
✔ 最佳答案
The answer is as follows:圖片參考：http://i277.photobucket.com/albums/kk75/uncle_michael/080913_mat_2.jpg?t=1221288295
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https://hk.answers.yahoo.com/question/index?qid=20080913000051KK01016