[Maxima] mnewton error
willisb at unk.edu
Tue Aug 17 15:55:21 CDT 2010
> The Jacobian determinant of your function f(a,b,c,d) is 0 at [1,1,1,1].
Nevertheless, I suspect that there is an error somewhere:
Unable to compute the LU factorization
Maxima encountered a Lisp error:
Error in MERROR [or a callee]: NIL is not of type CHARACTER.
The user should get a clear message, not a Lisp error.
I'd guess this is a bug in the LU code, but the mnewton code could use
Maybe the bug is related to the (ill-advised) way that the mnewton code
undeclared array h.
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