Polar and Cartesian on the Same Graph? HP Prime
05-01-2021, 03:40 AM
Post: #1
 123jkl123jkl Junior Member Posts: 10 Joined: Apr 2021
Polar and Cartesian on the Same Graph? HP Prime
Hi, is there a way to graph polar and cartesian on the same graph on the HP Prime? In other words, can I graph r(theta) = r*sin(theta) and x^2+y^2=1 on the same plot?

Thanks.
05-01-2021, 05:31 AM (This post was last modified: 05-01-2021 07:36 AM by StephanP.)
Post: #2
 StephanP Member Posts: 69 Joined: Apr 2015
RE: Polar and Cartesian on the Same Graph? HP Prime
I'd say: go parametric

05-01-2021, 07:19 AM
Post: #3
 StephenG1CMZ Senior Member Posts: 1,042 Joined: May 2015
RE: Polar and Cartesian on the Same Graph? HP Prime
A less mathematical alternative could put the two graphs on the same screen rather than on the same graph.

I was thinking:
Draw a graph
Save a bitmap
Draw 2nd graph
Load image of 1st graph with some transparency.

Which has the advantage that you don't need to rewrite every equation you may want to share a graph with.
But it's not exactly on the same graph.

Stephen Lewkowicz (G1CMZ)
https://my.numworks.com/python/steveg1cmz
05-01-2021, 12:31 PM
Post: #4
 123jkl123jkl Junior Member Posts: 10 Joined: Apr 2021
RE: Polar and Cartesian on the Same Graph? HP Prime
Thanks guys, I'll keep that in mind. These ways are a good work around to check if my Cartesian to Polar conversions are correct.
05-01-2021, 02:45 PM
Post: #5
 TheLastMillennial Member Posts: 121 Joined: Feb 2019
RE: Polar and Cartesian on the Same Graph? HP Prime
Doesn't the Geometry app have this functionality? I've haven't used it much but I know there's the option for all the different types of graphing.