Question

if f(x+y)=f(x)-f(y) then prove that f(3)=f(1)​

Answer 1

Step-by-step explanation:

Answer

Let x be any real and y=0.

Then f(x+0)=f(x×0)

⇒f(x)=f(0)∀x∈R

Hence the function is a constant function as it is the property of constant function.