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Question

nx
0
2ⁿ x

easy

Solution

Correct option is

nx

Multiplying by x and putting a = 1 – x, we get, the sum of series as nx

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SIMILAR QUESTIONS

Q1

then n must be equal to

easy View solution

Q2

If in the expansion of (2^1/3 + 3^–1/3)ⁿ, the ratio of the 7^th term from the beginning to the 7^th terms from the end is 1: 6, then n is equal to

easy View solution

Q3

If sum of the coefficients of x⁷ and x⁴ in the expansion of

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Q4

Coefficient of x⁹ in the expansion of

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Q5

If three successive coefficient in the expansion of (1 + x)ⁿ are in A.P., then (n + 2) is

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Q6

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Q7

Coefficient of xn in the expression (1 – 2x + 3x² – 4x³ +…)^–n equals

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Q8

If a = 99¹⁰⁰, b = 100⁹⁹, then

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Q9

If α Ïµ [– 1, 1] and I(α) denotes the term independent of x in the expansion of

exceed

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