[Axiom-mail] sqrt(-1) and %i

[Bill Page]

Dear Axiom users;

I have a problem converting expressions involving sqrt(-1) to
expressions involving complex numbers and the symbol %i.

For example this works:

(2) -> p:=sin(1)*sqrt(-1)

              +---+
  (2)  sin(1)\|- 1
                                                    Type: Expression Integer

(3) -> p::Expression Complex Integer

  (3)  %i sin(1)
                                      Type: Expression Complex Integer

but not if through some more complex computation I end up with a type like this:

(4) -> q:Expression Fraction Integer:=sin(1)*sqrt(-1)

              +---+
  (4)  sin(1)\|- 1
                                       Type: Expression Fraction Integer

(5) -> q::Expression Complex Fraction Integer

  Cannot convert from type Expression Fraction Integer to Expression
     Complex Fraction Integer for value
         +---+
  sin(1)\|- 1

-------

Can anyone find a way to accomplish this coercion?

Regards,
Bill Page.