In the expansion of 1 - 2x - 3x2 - 4x3 - - to -4- coefficient of x2 is

The correct option is A 36 y = #160; 1 2x + 3x^2 4x^3 + .... xy = x 2x^2 + 3x^3 + ... (1 + x) y = 1 x + x^2 x^3 + .... y ...

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Greatest Binomial Coefficients

In the expans...

Question

In the expansion of $(1 - 2 x + 3 x^{2} - 4 x^{3} + . . . .$ to $\infty)^{4}$ , coefficient of $x^{2}$ is

72

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36

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- 36

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Solution

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Similar questions

x^{n}

(1 - 2 x + 3 x^{2} - 4 x^{3} + \dots \dots \infty)^{2}

x^{n}

(1 - 2 x + 3 x^{2} - 4 x^{3} + . . . .)^{- n}

x^{8}

{(1 + 2 x + 3 x^{2} + 4 x^{3} + . . . .)}^{\frac{1}{2}}

x^{2}

\frac{1 - 2 x + 3 x^{2}}{e^{x}}

Question 54 (iii)

Write the coefficient of $x^{2}$ in the following:

$1 + 2 x + 3 x^{2} + 4 x^{3}$

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