Find the middle term in the expansion of [x-1/x]10
Is it -252x5???
I think, it 's something in 250 's. Please post all the steps.
The given expansion is .
General term of the given expansion,
Here n = 10, which is even.
So, th term i.e., 6th term is the middle terms of the given expansion.
Putting r = 5, we get
Thus, the middle term in the given expansion is –252.
Lalit Mehra(MeritNation Expert)on 30/11/11
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