HP48GX - How to plot tangent line of function?

HP48GX - How to plot tangent line of function? - Printable Version

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HP48GX - How to plot tangent line of function? - thomasross - 10-15-2017 07:42 PM

Hello,

If I have a function plotted is there a way to quickly plot the tangent line at a point?

RE: HP48GX - How to plot tangent line of function? - joeres - 10-15-2017 11:35 PM

(10-15-2017 07:42 PM)thomasross Wrote: Hello,

If I have a function plotted is there a way to quickly plot the tangent line at a point?

Hello,
use softkey "TANL" in picture "FCN" menu. See user guide (http://www.hpcalc.org/details/3937), page 22-11 (295).

Kind regards,
Joerg

RE: HP48GX - How to plot tangent line of function? - thomasross - 10-16-2017 01:10 AM

(10-15-2017 11:35 PM)joeres Wrote:
(10-15-2017 07:42 PM)thomasross Wrote: Hello,

If I have a function plotted is there a way to quickly plot the tangent line at a point?

Hello,
use softkey "TANL" in picture "FCN" menu. See user guide (http://www.hpcalc.org/details/3937), page 22-11 (295).

Kind regards,
Joerg

Thanks but that seems to only display the equation of the function - is there a way to plot it?

RE: HP48GX - How to plot tangent line of function? - joeres - 10-16-2017 04:32 PM

(10-16-2017 01:10 AM)thomasross Wrote: Thanks but that seems to only display the equation of the function - is there a way to plot it?

Example:

Or did I misunderstand something?
kind regards
Joerg

RE: HP48GX - How to plot tangent line of function? - ttw - 10-16-2017 06:01 PM

You could take the derivative of the function and plot that with the same axes and scaling.