On Tuesday 03 May 2011 16:00:05 Terry Reedy wrote: > On 5/3/2011 1:04 AM, Stefan Behnel wrote: > > The bad thing about this recipe is that it requires quite a > > bit of background knowledge in order to infer that the > > code the developer is looking at is actually correct. > > The main math knowledge needed is the trivial fact that if > a*x + b = 0, then x = -b/a. The other math knowledge needed > is that complex numbers add componentwise. The trick is that > replacing x with j and evaluating therefore causes (in > Python) all the coefficients of x (now j) to be added > together separately from all the constant terms to reduce > the linear equation to a*x+b (= 0 implied).
But the title of the project is wrong and misleading. In the description it says "linear equations solver" which suggests that it solves systems of linear equations - linalg. As has been pointed out, a "linear" equation can be solved by had in one line... OldAl. -- Algis http://akabaila.pcug.org.au/StructuralAnalysis.pdf
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