Question

9. If f(1)=8 and f(n)={f(n-1)+2 then which of the following is the value of f(3)?

(1) 5
(3) 3
(2) 7
(4) 6

Answer 1

5

Explanation:

f(1)=8

f(2)=1/2(8)+2=6

f(3)=1/2(6)+2=5