6 Replies
@Apu
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.Plug in x=y=2
(Ah sorry, keyboard problems) you get f(2)+f(2)+f(4)=f(2)*f(2)+2 and plugging in values you get the answer.
Also the question states f(1) is not equal to 1, reason for that being:
1. x=y=1 gives f(1)=2 or 1.
2. Plugging y=f(x)=1 gives f(x) being a constant function whereas plugging in y=f(1)=2 gives a tautology.
Abhi
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+solved @SirLancelotDuLac
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