If -f(x) + f(x-1) = 3x−f(x)+f(x−1)=3x and f(1)=1000f(1)=1000, what is f(20)f(20) ?
1 Answer
Jul 12, 2016
Explanation:
Given
So adding above last 20 equations we finally get
Given
So adding above last 20 equations we finally get