1.Solve the inequality (要步驟)
x／2 +1>x-2
2.Consider the sequence -3,9,-27,.....
write down the general term,hence the 100th term.
F.1 inequality&sequence
2010-07-14 4:41 am
回答 (1)
2010-07-14 5:20 am
✔ 最佳答案
1. x/2 + 1 > x - 2x + 2 > 2x - 4
2 + 4 > 2x - x
6 > x
2. 1st term = - 3
2nd term = - 3 x -3
3rd term = - 3 x - 3 x -3
so general term, the nth term is (-3)^n
the 100th term = (-3)^100.
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https://hk.answers.yahoo.com/question/index?qid=20100713000051KK01542