Question

If f(1) = 2 and f(n) = f(n − 1)² + 4 then find the value of ƒ (3).

Answer 1

f(3) = 68

Explanation:

→ f(1) = 2 ⇒ f(2) = f²(2 − 1) + 4

= f²(1) + 4

= 2² + 4

= 8

………………………………………………

→ f(2) = 8 ⇒ f(3) = f²(3 − 1) + 4

= f²(2) + 4

= 8² + 4

= 64 + 4

= 68