# Recursive equation

Given a_1=1,a_2=2,

a_(n+1)=2a_(n)-a_(n-1),n>=2, find a_n, for n>=1

https://brainmass.com/math/algebra/recursive-equation-13762

#### Solution Preview

Solution. Since a_(n+1)=2a_(n)-a_(n-1),

a_(n+1)-a_n=a_n-a_(n-1). ...

#### Solution Summary

This shows how to find a recursive equation.

$2.19