erotusyhtälö
An erotusyhtälö, which translates to "difference equation" in English, is a mathematical equation that defines a sequence recursively. The next value in the sequence is defined as a function of preceding values. This is in contrast to a differential equation, which defines a function whose rate of change is related to its value.
Difference equations are fundamental in various fields, including discrete mathematics, economics, engineering, and computer science. They
A simple example of a difference equation is a linear first-order equation of the form x_{n+1} = ax_n