F.1 數學題請教

🎓 學業台小學及中學教育

[匿名]

2010-02-13 5:37 am

F.1 數學題請教

If 4 is the coefficient of the term containing

a5(其實係 a to the power 5) in the expansion of
___4___2_____m
(3a +2a +5)(2a ), find the value of m.

很對唔住,打唔到index
所以上面條式係(3a to the power 4 + 2a to the power 2 +5)(2a to the power m)
{請列式}
thx

更新1:

m+2=5 係邊度黎?

回答 (1)

STEVIE-G™

2010-02-13 6:51 am

✔ 最佳答案

(3a^4+2a^2+5)(2a^m)=6a^(m+4)+4a^(m+2)+10a^m
If 4 is the coefficient of the term containing a^5
m+2=5
m=3

2010-02-12 22:52:25 補充：
a^x means a to the power x

2010-02-14 00:04:32 補充：
因為佢話a^5的係數係4...
咁姐係4a^(m+2)對比番4a^5
咁m+2姐係5

👍 0 👎 0

收錄日期: 2021-04-22 00:47:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100212000051KK01544

檢視 Wayback Machine 備份

F.1 數學題 請教

回答 (1)

F.1 數學題請教