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        what is the expansion of ( 1 + x)1/x.
7 years ago

SAGAR SINGH - IIT DELHI
879 Points
										Dear eshita,
A variant of the binomial formula is obtained by substituting 1 for x and x for y, so that it involves only a single variable. In this form, the formula  reads
$(1+x)^n = {n \choose 0}x^0 + {n \choose 1}x^1 + {n \choose 2}x^2 + \cdots + {n \choose {n-1}}x^{n-1} + {n \choose n}x^n,$
or equivalently
$(1+x)^n = \sum_{k=0}^n {n \choose k}x^k.$

Please feel free to post as many doubts on our discussion forum  as  you can.  We are all  IITians and here to help you in your IIT  JEE preparation.  All the best.


7 years ago
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