Product function (Π) & Casios

[Matt Agajanian]

Hi all.

While writing my double factorial program for the 67/97, I came across the product function, Π. This had me wondering. The function is present on the 115 series, but not the 991 calcs.

Maybe it’s just me, but I consider the 991 series to be a more sophisticated lineup than the 115 series. I would even consider the 991EX Classwiz to be an upgrade from any of the 115 models. As such, I would have thought that the product function would be present on the Classwiz.

So, any idea why it’s this way?

Thanks