Comment #87 on issue 1598 by smichr: New polynomials manipulation module
http://code.google.com/p/sympy/issues/detail?id=1598
Matteusz, I'm practically a polynomial neophyte so forgive this question if
needs
be...is there any simple way to have Poly recognize a nested poly like
y**3-3*y**2+1 where y = x**3-2 (for example)
In other words, the polynomial Poly(x**9 - 9*x**6 + 24*x**3 - 19, x,
domain='ZZ')
might appear to be unsolvable in terms of roots (having order higher than
4) but if
one recognizes that all powers of x are multiples of the lowest order
appearing then
one can try [I don't know what the verb is, recast? decompose?] that poly
into
something of the form (x**3+A)**3+B*(x**3+A)**2+C*(x**3+A) and then match
terms to
find A through C.
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