# Math Help - Finding The Coefficient of X^n

1. ## Finding The Coefficient of X^n

Hello Guys,

I am having a little problem with this question in generating functions.

I want to find the coefficient of :

$x^n$

in

$
\frac{1}{1 - 10x + 21x^2}
$

I am asking if someone can help me how to go about it.

Thanks.

2. Originally Posted by kap
Hello Guys,

I am having a little problem with this question in generating functions.

I want to find the coefficient of :

$x^n$

in

$
\frac{1}{1 - 10x + 21x^2}
$

I am asking if someone can help me how to go about it.

Thanks.
Use partial fractions.