Given function is f(x) =

And

⇒

⇒

Here, f(1) = 4

∴

So, a + b = 4 and b – a = 4

Solving the above two equations, we get

⇒ a = 0 and b = 4

Ans. The possible values of a and b for the given function f(x) are 0 and 4 respectively.