Binomial (Oxford M2a P.39 Q18)

2010-04-01 2:23 am

In the expansion of (x - 1/x)^10(x + 1/x)^4 ,find

a)the constant term

b) the coefficient os x^12

I need steps,plxxxx!~

回答 (1)

2010-04-01 5:57 am

✔ 最佳答案

====================================================

圖片參考：http://img31.imageshack.us/img31/7325/76342690.png

2010-03-31 21:58:22 補充：
Amendment for (b) (x-1/x)^10(x+1/x)^4=(x^10....

http://img31.imageshack.us/img31/7325/76342690.png

👍 0 👎 0