HP48GX - How to plot tangent line of function?

[thomasross]

Hello,

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

[joeres]

(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

[thomasross]

(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?

[joeres]

(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

[ttw]

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