maths 問題:
1.c=5(a-1)(b-1)/2 c=?
2.e=10(a+b)-2(c-d) e=?
3.f=e(45-d)(c-10) f=?
4.g=9f/9000)(f/9000)-(e-3d+c-3b-3a) g=?
maths
2007-09-30 2:17 am
回答 (1)
2007-09-30 6:25 am
✔ 最佳答案
1. c=5(a-1)(b-1)/2 c= 2.5(ab-a-b+1)
= 2.5ab-2.5a-2.5b+2.5 ,,
2. e=10(a+b)-2(c-d)
=10a+10b-2c+2d ,,
3.f=e(45-d)(c-10)
=e(45c-450-cd+10d)
=45ce-450e-cde+10de ,,
4.g=(9f/9000)(f/9000)-(e-3d+c-3b-3a)
=9f^2/81000-e+3d-c+3b+3a
=f^2/9000-e+3d-c+3b+3a
收錄日期: 2021-04-13 18:58:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070929000051KK03787