n-3r=0---(1)
nCr 乘 a to the power n-r 乘 2 to the power r = 15/4---(2)
a=? n=?
乘
請也講講當遇到這類question時~應從何入手~
更新1:
可否由(2乘a to the power 2)to the power r那裡開始解釋到最後~ 不是太明白~
更新2:
plz starting from~since 2 times a to the power 2 is even
緊急~!! A.maths question~
2007-06-07 5:05 am
點 solve
n-3r=0---(1)
nCr 乘 a to the power n-r 乘 2 to the power r = 15/4---(2)
a=? n=?
乘
請也講講當遇到這類question時~應從何入手~
n-3r=0---(1)
nCr 乘 a to the power n-r 乘 2 to the power r = 15/4---(2)
a=? n=?
乘
請也講講當遇到這類question時~應從何入手~
回答 (1)
2007-06-07 8:08 am
✔ 最佳答案
As follows:圖片參考：http://i117.photobucket.com/albums/o61/billy_hywung/Jun07/Crazybinomial1.jpg
參考: My Maths knowledge
收錄日期: 2021-04-21 13:16:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070606000051KK04301