A couple of questions about the HP9810 desktop calculator : (1) What _should_ you get if you press 1/x with a cleared stack (in particular, what should the exponent be)?
(2) How do you change the angle mode with the optional Maths ROM cartridge. I know it's _displayed_ using the 3 LEDs above the definable keypad, but how do you set it?
Thanks in advance for any help.
A couple of HP9810 questions
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