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Binomial theprem and expansion

by rohan03
Tags: binomial, expansion, theprem
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rohan03
#1
Apr1-12, 11:07 AM
P: 56
(1+x)^n=1+nx/1!+(n(n-1) x^2)/2!+⋯+ what are the last few terms of this ? I looked and tried but don't seem to get any text book answer for this.
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tiny-tim
#2
Apr1-12, 11:59 AM
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hi rohan03!

(try using the X2 and X2 buttons just above the Reply box )

the binomial coefficients are symmetric (nCr = nCn-r),
so it ends + n(n-1) xn-2/2! + nxn-1/1! + xn
rohan03
#3
Apr1-12, 12:17 PM
P: 56
Thank you . Can I prove with the help of this :
(1+n)n ≥ 5/2nn- 1/2n n-1

rohan03
#4
Apr1-12, 12:18 PM
P: 56
Binomial theprem and expansion

and if yes - please guide on how
tiny-tim
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Apr1-12, 03:12 PM
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Quote Quote by rohan03 View Post
Thank you . Can I prove with the help of this :
(1+n)n ≥ 5/2nn- 1/2n n-1
just write out the last three terms
what do you get?
HallsofIvy
#6
Apr1-12, 06:30 PM
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This was also posted under "homework" so I am closing this thread.


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