Obviously, the output of (3) is not really what one would expect.
Second question. Having an expression like x, how can I turn it into
something like y, i.e. how can I unbox such an expression?
%%% (1) -> x := 1/box(sqrt(2)); y := sqrt(2)/2;
Type: AlgebraicNumber
%%% (2) -> (x=y)@Boolean
(2) false
Type: Boolean
%%% (3) -> trueEqual(x,y)
>> Error detected within library code:
cannot retract nonconstant polynomial
Ralf
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