若a,m1,m2,b和a,n1,n2,n3,b是兩個等差數列,求(m1+m2)/(n1+n3)的值。(需步驟)
A. 1
B. ab
C. a/b
D. b/a
maths~!!!!
2009-09-09 5:11 am
回答 (1)
2009-09-09 5:18 am
✔ 最佳答案
m1 + m2 = a + bn1 + n3 = a + b
(m1+m2)/(n1+n3)
= (a+b)/(a+b)
= 1
(A)
收錄日期: 2021-04-21 22:02:11
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