>
> Just for the record...Another difference.
>
> Look into HyperDoc -> Examples -> Expression and scroll down to
>
> e2 := cos(x^2 - y + 3)
>
> Next we get
>
> (7) -> e3 := asin(e2) - %pi/2
>
> 2
> 2asin(cos(y - x - 3)) - %pi
> (7) ----------------------------
> 2
>
> whereas on NAGcdrom it shows
>
> \[
> -y+{x \sp 2}+3
> \]
>
> in development/int/doc/htex/output/EXPR.out
>
> Next thing is
>
> e3 :: Polynomial Integer
>
> Daly Bug
> Cannot convert from type Expression(Integer) to
> Polynomial(Integer) for value
> 2
> 2asin(cos(y - x - 3)) - %pi
> ----------------------------
> 2
>
> in FriCAS and the obvious result for the polynomial on the NAGcdrom.
>
> What should I do about it? I guess we'll have to go through these
> example pages again and revise them. The old NAG result looks incorrect
> given the fact that arcsin is multivalued.
I have tried to keep examples in .ht files and algebra in sync
but I missed this case (and possibly several others). In this
case adding 'normalize' fixes the example so I plan to do that.
--
Waldek Hebisch
[email protected]
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