Bill Page wrote:
>
> Try this:
>
> (1) -> x^1.2
>
> 5+-+
> (1) x\|x
>
> Type: Expression Float
>
> (2) -> %::InputForm
>
> (2)
> (/
> (+
> (+ (float 0 0 2)
> (* (+ (+ (float 0 0 2) (* (float 1 0 2) x)) (float 0 0 2))
> (**
> (/ (+ (+ (float 0 0 2) (* (float 1 0 2) x)) (float 0 0 2))
> (float 1 0 2))
> (/ 1 (/ (float 5 0 2) (float 1 0 2))))
> )
> )
> (float 0 0 2))
> (float 1 0 2))
>
> Type: InputForm
>
> Using unparse or the most recent version of OpenAxiom this displays as:
>
> (2)
> (float(0,0,2) + (float(0,0,2) + float(1,0,2)*x +
> float(0,0,2))*((float(0,0,2)
> + float(1,0,2)*x +
> float(0,0,2))/float(1,0,2))^(1/(float(5,0,2)/float(1,0,2)
> )) + float(0,0,2))/float(1,0,2)
>
> Type: InputForm
>
> (3) -> interpret(%)$InputForm
>
> 5+-+
> (3) x\|x
>
> Type: Expression Float
>
> ----
>
> Can anyone explain this odd result? Or this even one?
>
> (4) -> (x^1.0)::InputForm
>
> (4)
> (/ (+ (+ (float 0 0 2) (* (float 1 0 2) x)) (float 0 0 2)) (float 1 0 2))
>
> Type: InputForm
>
It looks like internal representation.
Expression is a quotient of two polynimials. Denominator is
just constant polynimial equal 1. In numerator you have two
variables (x and the root), but you also see explicitly
zero coefficients (that is a bit strange because internally
polynomial is sparse). Root has two arguments, which again
are expressions...
--
Waldek Hebisch
[EMAIL PROTECTED]
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