(a) Deduce the formula for evaluating Sn.
幫幫手.其實一睇就知答案
但係諗唔到點計-.-
之前有人問過.但係答案都唔岩嘅-.-
更新1:
但係本書個答案係[(2n+1)^2+1]/(2n+1)^2喎
mathematical induction
2011-11-12 5:33 am
It is given that Sn = (8x1) / [(1^2) x (3^2)] + (8x2) / [(3^2) x (5^2)] +...+ (8n) / [(2n-1)^2‧(2n+1)^2], where n is a positive integer, and S1 = 8/9, S2=24/25, S3=48/49 and S4=80/81.
(a) Deduce the formula for evaluating Sn.
幫幫手.其實一睇就知答案
但係諗唔到點計-.-
之前有人問過.但係答案都唔岩嘅-.-
(a) Deduce the formula for evaluating Sn.
幫幫手.其實一睇就知答案
但係諗唔到點計-.-
之前有人問過.但係答案都唔岩嘅-.-
回答 (2)
2011-11-12 10:09 pm
✔ 最佳答案
http://i1090.photobucket.com/albums/i376/Nelson_Yu/int-151.jpghttp://i1090.photobucket.com/albums/i376/Nelson_Yu/int-152.jpg圖片參考：http://i1090.photobucket.com/albums/i376/Nelson_Yu/int-151.jpg
圖片參考：http://i1090.photobucket.com/albums/i376/Nelson_Yu/int-152.jpg
2011-11-13 11:07:53 補充：
你本書寫錯,係[(2n+1)^2-1]/(2n+1)^2
你代n=1,n=2,...就知
2011-11-13 8:44 am
但係本書個答案係[(2n+1)^2+1]/(2n+1)^2喎
收錄日期: 2021-04-23 23:25:16
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111111000051KK00629