$\displaystyle Given: f(x)=2x+f(x-1) and f(1)=4, find f(9)$ (sorry guys, latex is being uncooperative. towards the end that says: and f(1)=4, find f(9).)
Could anyone suggest where i might begin this problem?
$\displaystyle Given: f(x)=2x+f(x-1) and f(1)=4, find f(9)$ (sorry guys, latex is being uncooperative. towards the end that says: and f(1)=4, find f(9).)
Could anyone suggest where i might begin this problem?
The function is define recursively
Notice that
$\displaystyle f(2)=2(2)+f(2-1)=4+f(1)=4+4=8$ and now