If f(x) = 1-x 2次方 and g(x) = 4x - 1 ,find:
1. f[g(a-1)] ???
超簡單中四maths
2008-09-09 7:27 am
回答 (1)
2008-09-13 8:30 am
✔ 最佳答案
先做 g(a-1)= 4(a-1) -1
= 4a -4 -1
= 4a-5
然後 f[g(a-1)]
=f(4a-5)
= 1- (4a-5) ^2
= 1- 16a^2 -25 +40a
=40a - 16a^2 -24
收錄日期: 2021-04-15 18:16:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080908000051KK02791