- #1

kpoltorak

- 15

- 0

## Homework Statement

Does a general formula exist?

[tex]

\sum \limits_{k=0}^{m_1} a_kx^k\cdot\sum \limits_{k=0}^{m_2} b_kx^k=\sum \limits_{k=0}^{m_1+m_2} c_kx^k

[/tex]

## Homework Equations

## The Attempt at a Solution

I am having trouble understanding the relation between the c coefficients in the product and the respective a and b coefficients in the factors. Could somebody shed some light on this? I am fairly certain there is a relation between the two which is based on combinatorics but cannot find the answer anywhere.