> Re x*delta(x)/x, what is the disciplined way of handling that? Why do you simplify (x*delta(x)) first? Why doesn't it associate as x*(delta(x)/x), which
> presumably is undefined at zero? (or is it?)
If G(x) * delta(x) is the arithmetic average of the left and right limits of G, I suppose (x / x) delta(x) should simplify to delta(x). That would make
Maxima's simplification of (x * delta(x))/x -- > delta(x) wrong, I would think. Possibly the cure is that such expressions need non commutative
multiplication?
Expressions such as delta(x)^2 or 1/delta(x) are simply undefined, I'm pretty sure. This might be mostly a GIGO problem.
--Barton
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