Prof. Dr. Johannes Grabmeier wrote:
> 
> Any hint how to simplify the definite integral of the Gaussian density
> func tion to 1?
 
> intf := integrate(f, x=%minusInfinity..%plusInfinity)
>
> 
>             +---+
>           2\|%pi
>    (2)  -----------
>          +-+ +----+
>         \|2 \|2%pi
>                   Type: Union(f1: OrderedCompletion(Expression(Integer)),...)
> simplify intf
...
> normalize intf
...

See may answer in the thread:

http://groups.google.com/group/fricas-devel/browse_thread/thread/5457b583d6c927c8?hl=en#

AFAIK no included simplification functions can handle your example.
However, with code from the thread above I get:

(4) -> x := 2*sqrt(%pi)/(sqrt(2)*sqrt(2*%pi))

            +---+
          2\|%pi
   (4)  -----------
         +-+ +----+
        \|2 \|2%pi
                                                    Type: Expression(Integer)
(5) -> rootFactor(x)

   (5)  1
                                                    Type: Expression(Integer)


-- 
                              Waldek Hebisch
[email protected] 

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