Properties
Category
Danish
Similar Topics
Statistics
Comments
3
Participants
3
Subscribers
3
Votes
2
Views
129
Share
curves, deriving coordinate functions
New
Hi,
After defining a curve, say r (only tried 2D), you can get x(r) and y(r) getting two functions f(t)=x(r(t)) and g(t)=y(r(t)).
If you start writing derivative(f,t) in Input, the plot is shown, but when you hit Enter, it comes up as Undefined.
The same works in CAS without problems, it seems.
 GeoGebra
 Help
 Partners

Contact us
 Feedback & Questions
 This email address is being protected from spambots. You need JavaScript enabled to view it.
 +43 677 6137 2693
© 2019 International GeoGebra Institute
Which version of GeoGebra and OS?
Please post your file
I can confirm Jens observation and it is not helpful to post a file, because the result is an undefined function.
Try: a=curve(3u²,2u*exp(u), u, 10,10) and define f(t)=x(a) and g(t)=y(a)
Then you can see the described problem.
My system: Windows 10 and GG 5.0533
Greetings
mire2
Thank you, my OS and GG is the same.
Btw. as far as I can see, x(a) and y(a) might be obvious, but it seems it's undocumentet.
Comments have been locked on this page!