JEE Main 2019 Mathematics question
Let , where the function f satisfies f(x + y) = f(x)f(y) for all natural numbers x, y and f(1) = 2. Then the natural number 'a' is:
Answer: (B)
Solution
; ⇒ , a = 3.
Let , where the function f satisfies f(x + y) = f(x)f(y) for all natural numbers x, y and f(1) = 2. Then the natural number 'a' is:
; ⇒ , a = 3.