請詳細步驟教我計以下二條 :
圖片參考：http://imgcld.yimg.com/8/n/HA05788109/o/20130405183330.jpg
急 F6 Geometric Sequences 02q13
2013-04-06 2:34 am
回答 (1)
2013-04-06 2:53 am
✔ 最佳答案
12a) Yes , it is. The common difference is 15.b) Yes , it is . The common difference is 15.
13a) Yes, it is. The common difference is d.
b) Yes , it is. The common differemce is 2d
c) Yes , it is. The common difference is d
收錄日期: 2021-04-13 19:24:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130405000051KK00313