quad_qagi with minf



Robert Dodier wrote:
> 
> Probably it would be a good idea to try to make the syntax for quad_qagi
> just a little more intuitive.

Done.  The limits for quad_qagi are just the limits of integration.  At
least one of the limits must be inf (or minf).  If both limits are
finite, quad_qagi refuses to do anything and just returns the noun form.

Ray