AngouriMath
InPrintOrder(AngouriMath.Entity)
Method (no overloads)
Summary
The answer with each product's factors in the order a product is written by hand: the
number, then the letters and their powers, then the rest -- a function, an exponential,
a sum -- each kind in the order it had. So2 y sin(x) and x e^x , not
2 sin(x) y and e^x x : the references write it so (DLMF 5.5.1 is
Γ(z + 1) = z Γ(z) ), and ISO 80000-2 lets a function's argument go without
parentheses,sin nπ , so a letter written after a function reads as part of its
argument. https://github.com/asc-community/AngouriMath/issues/1628
number, then the letters and their powers, then the rest -- a function, an exponential,
a sum -- each kind in the order it had. So
parentheses,
argument. https://github.com/asc-community/AngouriMath/issues/1628
Remarks
Only the answer is put in this order. The canonical order the search sorts by puts a
sine before every letter, and the rules that combine factors are binary: they meet
2 cos(x) sin(x) as neighbours only because nothing sorts between them. Sorting
letters first inside the search putx there, so 2 x sin(x) cos(x) no
longer becamex sin(2x) , l'Hopital's rule saw its quotients grow a step sooner
andlim 1/x^2 - 1/sin(x)^2 at 0 was NaN where it is -1/3 . Reordering a
product changes no node count, so nothing that ranks candidates sees it, and a caller
simplifying the answer again has it sorted back before any rule reads it.
sine before every letter, and the rules that combine factors are binary: they meet
letters first inside the search put
longer became
and
product changes no node count, so nothing that ranks candidates sees it, and a caller
simplifying the answer again has it sorted back before any rule reads it.
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