Now the last para was not very polite ....
but I guess Mentors have some kinda license to say like that.

My skull is not yet thick man, and I don't have to forcefully open it (which is probably the case with you ...).
You don't know how crazy you look ... when you say N=3 and x=3.

> Getting through to you is like trying to stone a donkey to death with ripe figs.
Precisely .. if you are not thorough with what you are talking aboout.

Yes ... exactly,
and there is no question at all, of a derivative of f(x), as it's bound to integer set, which is discontinuous.

You get that xp ??????????????

May be May be not but now I have managed to answer why the differencials would be different which I started after 88th Post

Yeah I got that. I can't believe you think members of the f(x)=Nx family are discontinuous. Remember, N is an integer, but x isn't; x is valid for all real numbers from -Inf to +Inf.
Maybe it's you that needs to revise differentiation, not me.
I've even given you a Wolfram Alpha reference that shows f(x)=x, f(x)=2x, f(x)=3x, f(x)=4x, f(x)=5x and none of them looked discontinuous to me, although I obviously haven't got your Batman-vision.

Any member who reads this thread will have a clear idea of who needs to revise differentiation.
Yeah, I may have Batman-vision, but I am not goofy.