the general term of am infinite geometric sequence is given by:
T(n)=6(x+1/8)^n
Find the range of the values of x for which the sum to infinity exists.
f.5 math(gs)
2011-04-04 9:42 am
回答 (2)
2011-04-04 10:01 am
✔ 最佳答案
the general term of am infinite geometricsequence is given by:T(n)=6(x+1/8)^n
Find the range of the values of x for which the sum to infinity exists.
Sol
T(n+1)=6(x+1/8)^(n+1)
T(n+1)/T(n)=x+1.8
｜x+1.8｜<1
－1<x+1.8<1
－2.8<x<－0.8
2011-04-06 12:54 am
answer = 999. don't ask me how to get it.
收錄日期: 2021-04-13 17:53:55
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110404000051KK00098