Marxism and Mathematics
Les Schaffer
schaffer at SPAMoptonline.net
Tue Feb 13 15:45:52 MST 2001
Sid said:
> This causes confusion since on the rhs we put y = x
> but on the lhs we say y -> x, which is not consistent.
this is incorrect.
standard classical mystical calculus _defines_ the derivative as the limit
as y -> x of your ratio [f(y)-f(x)] / (y-x).
and since lim y->x y+x = 2x, whats the big deal???
y^2 - x^2 (y+x) (y-x)
lim y->x --------- = lim y->x --------- = lim y->x y+x = 2x
y-x y-x
case closed....
les schaffer
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