Why won't the prime graph correctly?

[ijabbott]

(05-24-2019 04:06 PM)toml_12953 Wrote:  

(05-24-2019 03:36 PM)ijabbott Wrote:  There are some other oddities about configuring the Complex setting in the Symbolic Setup. First of all, the setting here seems to be inverted. Setting it to "On" disables complex output from real inputs in the calculator. Setting it to "Off" enables complex output from real inputs in the calculator. Secondly, setting Complex to "Off" or "On" in the Symbolic Setup hides the complex display format setting in Home Settings. You just get a string that says "See Symbolic Setup", but the complex display format is not configurable in the Symbolic Setup.

Thanks a lot! Your post gave me a headache just trying to follow the settings!

Actually, I made a mistake in the bit before that paragraph, and have edited the post to correct it.

To illustrate: go to Symbolic Setup (Shift - Symb) and set Complex to On. Then press the Home key and try and take the square root of -1. (Fail!) Now go back to Symbolic Setup and set Complex to Off. Now try and take the square root of -1 again. (Success!)