Delete Equation in Plus42

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Hans Frieder

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Mar 25, 2026, 4:18:54 AM (9 days ago) Mar 25
to Free42 & Plus42
Plus42: In the [PLOT] menue, the top line indicates the equation 'Y=X^2'. The equation is deleted under [EQN]. Anyway, this is the only function, that will be plotted. Plotting of other functions is not possible. How can I remove this equation?

Thomas Okken

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Mar 25, 2026, 4:42:32 AM (9 days ago) Mar 25
to Free42 & Plus42
You select a program or equation to be plotted as follows:

1. To select an equation from the EQN list: Press EQN to enter equation mode; use the up/down arrows to find the equation you want to plot; press PLOT.
2. To select an equation that is stored in a variable: press PLOT to enter the plotting menu; press EQN (this is the EQNPLOT function); select the variable containing the equation.
3. To select  program: press PLOT to enter the plotting menu; press PGM (this is the PGMPLOT function); select the program.

The equation or program you select for plotting will replace the previous one. Note that there is no option to remove the current plot equation or program without selecting a new one.

Hans Frieder

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Mar 25, 2026, 7:53:05 AM (9 days ago) Mar 25
to Free42 & Plus42
Thank you Thomas, for the helpful, quick and competent answer. 
With the Plus42 emulator you have made a real great job!
(I'm an 'old school' calculator user that has startet with HP-35 ...)
Kind regards / Hans

Thomas Okken

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Mar 25, 2026, 6:26:23 PM (9 days ago) Mar 25
to Free42 & Plus42
My pleasure!

I started with the HP-25 myself :-)
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