The ratio of the coefficient of (r+1)^{th} term in the expansion o | Filo

Class 11

Math

Algebra

Binomial Theorem

532
150

The ratio of the coefficient of term in the expansion of to the sum of the coefficients of and terms in the expansion of is:

Solution: th term in the expansion is is

Thus the coefficient of term is
Now,
th term in the expansion of is
So, coefficient of term is
and thus the coefficient of th term is
using standard formula
Hence, the required ratio is .
532
150

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