JEE MATHEMATICS MCQ: BINOMIAL THEOREM

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Application +4 | -1

f(x)=x^n

, then the value of

f(1)+\frac{f^1(1)}{1 !}+\frac{f^2(1)}{2 !}

+\ldots+\frac{f^n(1)}{n !}

, where

f^r(x)

denotes the

r

th order derivative of

f(x)

with respect to

x

, is

View answer and explanation

Correct option: B

2^n

Option B (

2^n

) is correct because the given expression is equivalent to the binomial expansion of

(1+1)^n

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\left({ }^{10} C_0\right)^2-\left({ }^{10} C_1\right)^2+\ldots-\left({ }^{10} C_9\right)^2+\left({ }^{10} C_{10}\right)^2

a

d

\left( {n + 1} \right)

a{C_0} - \left( {a + d} \right){C_1} + \left( {a + 2d} \right){C_2} - ... + ...

(1-x)^{201}\left(1+x+x^2\right)^{200}

\left(\frac{1}{x}+2 x\right)^n

{x^5}

\frac{{1 + {x^2}}}{{1 + x}},\left| x \right| < 1,

\left(\begin{array}{c}2 n+1 \\ 0\end{array}\right)+\left(\begin{array}{c}2 n+1 \\ 3\end{array}\right)+\left(\begin{array}{c}2 n+1 \\ 6\end{array}\right)+\ldots=170

n