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HP Forum Archive 21

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[HP Prime] plotfunc() bug in CAS
Message #1 Posted by Chris Pem10 on 3 Dec 2013, 11:50 p.m.

In CAS view enter the following:

plotfunc(SIN(x))

The result is a tiny plot. Now selecting the tiny plot and copying it to the stack results in the following:

plotparm(x+(i)*sin(x),x=5...5.0125)

Notice the extra dot in the x range. It is necessary to remove the extra dot for the plotparm() function to work.

I uploaded a screencast of the bug here:

http://youtu.be/ymjKwIXUvFE

[EDIT]

Perhaps the 3 dots are fine (the first is a decimal) and only a space is needed:

plotparm(x+(i)*sin(x),x=5. ..5.0125)

[EDIT 2]

Another bug in plotfunc() and/or plotparm():

http://youtu.be/IMm8AgLxVJI

Edited: 4 Dec 2013, 12:12 a.m.

      
Re: [HP Prime] plotfunc() bug in CAS
Message #2 Posted by parisse on 4 Dec 2013, 2:44 p.m.,
in response to message #1 by Chris Pem10

Indeed a bug in plot for exp(), confusion with plotting an exponential law, I have fixed it in giac source, will certainly be available with the next HP firmware update. Until then, enter the variable and it will work (plotfunc(exp(-x^2),x))

            
Re: [HP Prime] plotfunc() bug in CAS
Message #3 Posted by Chris Pem10 on 4 Dec 2013, 2:46 p.m.,
in response to message #2 by parisse

Thanks !


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