Re: What should "solving" really mean, some literature.
Subject: Re: What should "solving" really mean, some literature.
From: Chris Fleming
Date: Sat, 06 Oct 2001 16:49:20 -0400
I have a suggestion that may require alot of programming, but it is a
feature that I have always wanted in a CAS but never seen.
When solving an equation such as
exp(1) = exp(x) for x
return an infinite set of solutions
x = {1 + 2*k*pi*i} | k is an integer
so everytime this happens, there would be a k1, k2, k3 ... or perhaps
just saying int1, int2, ... would be better.
And then just do calculations on the set as normal. I am thinking that
when I work in the complex plane, this is how I would do it, and my
understanding of CAS is that it seems possible. The only problem I can
see is to make Maxima understand that something like int1 + int2 could
be simplified to int3
And people that only want real solutions, then there could be a flag so
the integer will be assumed to be zero.
I also had one other feature that I have always wanted, and that is when
you try to do something funny like integrate x^p for x, instead of
having to give information about p, just return a piece wise function
for different values of p