HP48GX - How to plot tangent line of function?
10-15-2017, 07:42 PM
Post: #1
 thomasross Junior Member Posts: 11 Joined: Mar 2017
HP48GX - How to plot tangent line of function?
Hello,

If I have a function plotted is there a way to quickly plot the tangent line at a point?
10-15-2017, 11:35 PM
Post: #2
 joeres Junior Member Posts: 44 Joined: Oct 2016
RE: HP48GX - How to plot tangent line of function?
(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
10-16-2017, 01:10 AM
Post: #3
 thomasross Junior Member Posts: 11 Joined: Mar 2017
RE: HP48GX - How to plot tangent line of function?
(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?
10-16-2017, 04:32 PM
Post: #4
 joeres Junior Member Posts: 44 Joined: Oct 2016
RE: HP48GX - How to plot tangent line of function?
(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
10-16-2017, 06:01 PM
Post: #5
 ttw Member Posts: 249 Joined: Jun 2014
RE: HP48GX - How to plot tangent line of function?
You could take the derivative of the function and plot that with the same axes and scaling.
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