First Month with 50g

[Joe Horn]

(04-10-2015 12:45 AM)MarkMason Wrote:  One feature that may be in the 'nice to have' category would be a RPN sequence to algebraic expression converter. I really haven't decided if this is realistic or necessary but the calculator does so many other incredible things like symbolic math it makes one's mind wander....

The 50g has an RPN-to-algebraic converter (and vice versa) built in. Just type 256 MENU and then press NXT. The last two menu keys are →LST and →ALG. They convert an algebraic object to RPN (in list form), and RPN (in list form) to algebraic object, respectively:

'1+2*3' →LST --> { 1 2 3 * + }
{ 1 2 3 * + } →ALG --> '1+2*3'

Cool, huh? WARNING: Be careful not to throw bad RPN at →ALG, or you'll either get an 'Invalid Expression' (do NOT evaluate these!) or a "Try To Restore Memory?" followed by a memory wipe. An example of bad RPN would be { 1 2 3 + } because that doesn't resolve to a single object. { 1 2 + * } is likewise bad.