acer 28546:

That code came from what I believe is the full set of Maple manual. Is is hard sometimes to see the the multiplication sign at default page magnification. It would be nice if multiplication sign showed as *.

Samir:

Thanks again for the prompt reply. 

The following does not work (see the red)

Much apreciate your excellent solutions Samir, thanks!

Much thanks to you too tomleslie 13604

The both of you have acelerated my learning curve inmensely.