Mr. Genius xpi0t0s
f(x) = Nx is ***NOT*** your function by that way. --- there you contradict yourself yet again.
If f(x) = Nx is your function, then when N=x, I can say f(x) = x^2, which you don't agree.
There is a saying :: "Arguing with a fool proves there are two."
So, I end this discussion here.
I know people like you don't give up, although they know they have already lost it.. They can go to any extent ..... Dr.Maths was wrong, mayjune was wrong and may be the whole world is ('coz just google your question and you'll know). Now, I really understand why you called yourself thick-skinned.