Casio fx-991CW

[Matt Agajanian]

(10-05-2022 05:43 PM)Dave Britten Wrote:  

(10-05-2022 05:09 PM)ijabbott Wrote:  I'll have to read the manual. Perhaps they've done something reasonable like allowing '-' to behave as a unary minus where required, except when used at the beginning of input (when it would insert 'Ans' before the '-' to continue the previous calculation).

You might be right - I think a lot of Casios let you use the subtraction symbol for negative values too.

Yes. Between the models I have (See low portion of this post), the TI-36X Pro, Sharp EL-W516T and X, Casios behave with using subtract to create negative values or variables. TIs and Sharps have a Syntax Error fit.

Unless one of you folks already have a TI-30X Pro MathPrint (mine's coming in December), I'm presuming, that has a Syntax Error fit when trying to use minus to enter a negative nuber or variable.
TI-36X Pro, Casio fx-115ES (1st & 2nd editions), Casio fx-991EX Classwiz, 991 ES Plus 2nd Edition, Sharp EL-W516X & T. Of course, I own several (approximately a dozen) HPs & some (gasp) TIs.