1.

Find n, if the ratio of the fifth term from the beginning to fifth term from the end in the expansion of (4√2+14√3)n is √6:1. Or Prove that the coeffficient of the middle term in the expansion of (1+x)2n is equal to the sum of the coefficient of middle terms in the expansion of (1+x)2n−1.

Answer»

Find n, if the ratio of the fifth term from the beginning to fifth term from the end in the expansion of (42+143)n is 6:1.

Or

Prove that the coeffficient of the middle term in the expansion of (1+x)2n is equal to the sum of the coefficient of middle terms in the expansion of (1+x)2n1.



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