Hello,

As I posted in an earlier post, I think the Spreadsheet App may be the most powerful/useful on on the Prime. It certainly seems to be able to do some things that traditional ones cannot.

I spent some time in a new spreadsheet which takes an expression entered in a cell - say =x^3-3*x-1 (in cell C3 which I named Expr1) then other cells contain CAS functions which use/refer to Expr1. Some worked and some did not. I was in Textbook, Minimum, Exact mode.

These WORKED:

=(Expr)',

=Integral(Expr1)dx using math template/integral,

=Integral(Expr1)dx using math template AND referring to named Lower/Upper limits of integration

=CAS.zeros(Expr1)

These had PROBLEMS:

= diff(Expr1) using math template, diff() and/or toolbox/cas/calculus/differentiate

= CAS.int(Expr1) using toolbox/cas/calculus/integrate

= CAS.solve(Expr1,x) and =CAS.nsolve(Expr1,x)

Best,

Carl