RPN vs The Big Three

[halbitton]

On the 50G, you can build an un-evaluated equation right on the stack using RPN keystrokes, with the following caveat... you have to start the equation by entering the innermost term as an algebraic object (put it between apostrophes using algebraic keystrokes). The calculator will not evaluate the algebraic, nor will it evaluate subsequent operations that you put on (using RPN keystrokes). Rather, it will magically build your equation right before your eyes, putting in brackets, etc as appropriate. When done, you can hit EVAL to crunch. I think this works on any RPL machine, as well.
Best regards, Hal