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![[Post New]](/templates/default/images/icon_minipost_new.gif) 5 Apr 2008 22:13:33 IST
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Consider (x-1)^n+2 = Cox^n+2 - C1 x^n+1 ...
Differentiating we get
(n+2)(1)(x-1)^n+1 = (n+2)Cox^n+1 - (n+1)C1 x^n .....
Putting x = 2 , we get the desired result
=> n+2.
Why option C :( . Are you sure you have typed the power of 2 correctly, I think every power should be increased by 1 to get the required answer.Or simply by symmetry you can guess the answer.
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Let us learn to dream, gentlemen, and then perhaps we shall learn the truth.
- August Kekule |
this reply: 10 points
(with 2 
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