One solution is to map the expression into
polynomial expressions with variable 'a' and
'r' over the floating point numbers
sage: a,r = SR.var('a,r');
sage: expr = ((sqrt(2)*a-2*r)/(2+2*sqrt(2)))
sage: RDF['a,r'](expr)
0.2928932188134525*a - 0.4142135623730951*r
(this is not very robust as it would fail for something
like cos(sqrt(2) + r))
Vincent
Le 28/07/2020 à 11:24, Bert Henry a écrit :
Am Dienstag, 28. Juli 2020 11:13:49 UTC+2 schrieb JJS137:
Have you tried canonicalize_radical() ?
Cheers,
John
Yes, but it doesn't solve the problem
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