Larger stack size

[ijabbott]

(12-29-2020 06:31 PM)Dave Britten Wrote:  

(12-29-2020 06:29 PM)Massimo Gnerucci Wrote:  Mathematically none that I know of.

Between calculator models, there certainly seems to be.

The TI 84 Plus is worse than I thought: it's left-associative in classic mode, and right-associative in Math Print mode. The exact same key sequence will give you a different result depending on which of the two display modes you're in! I think Casio has the right idea of making it clearly right-associative, with a forced ( in line-I/O mode.

The Casio solution is a good technique. For the TI, you can understand why they would have made it left-associative in classic mode for consistency with other binary operators, and perhaps for consistency with earlier AOS models.

Back to HP Land, the HP-27S also has a left-associative exponentiation operator, but it displays partially evaluated results as it goes, so that [3] [x^y] [3] [x^y] [3] is finally displayed as 27^3.