The coefficient of x^n in \frac{1-2 x}{e^x} is :

Correct Answer is : (−1)n⋅(1−2n)n!

(-1)^n \cdot \frac{(1+2 n)}{n !}

(-1)^n \cdot \frac{(1-2 n)}{n !}

(-1)^n \cdot \frac{(1+4 n)}{n !}

EAMCET Engineering 2006 Solved Paper

Section: Mathematics

Question : 92 of 160

Marks: +1, -0

The coefficient of xn in ‌

1−2x

is :

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