Originally Posted by SaswatPadhi
Or, if you consider f(x) = x + x + x + x + x i.e. 5x then ...
because f'(x) = 5 which is independent of x.
Yes, that was the question.
Next step: if f(x)=x+x+x+x+x and x=5, do you agree or disagree that f'(x)=x?