更新1:
唔該每條都（（（比條式我）））
更新2:
唔逐 清楚列明成條式
更新3:
唔該 清楚列明成條式
若是等差數列，求它的公差；若是等比數列，則求它的公比／／唔該每條都條式我
2006-12-04 3:49 am
a) 6,30,150,750,3750 b) -2,-5,-8,-11,-14 C) 20,-40,80,-160,320 d) 180,164,148,132,116
回答 (1)
2006-12-04 4:06 am
✔ 最佳答案
a) 6,30,150,750,3750公比 = 30/6 = 5
b) -2,-5,-8,-11,-14
公差 = (-5)-(-2) = -3
c) 20,-40,80,-160,320
公比 = (-40)/20 = -2
d) 180,164,148,132,116
公差 = 164-180 = -16
收錄日期: 2021-04-23 16:25:59
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061203000051KK04646