It shows error, when I use 'y' variable, and says it is not defined.
So only plots of the form y=f(x) are allowed. How do I overcome this limitation in plotting?
And also how are 2d plots converted to 3D. I know how to do it. But how is it possible to make a 3d plot of a curve say, sin , as it is inherently in 2 dimensions.
the first issue is probably because you didn't define the variable y, this can be done typing y = var('y'). The fact that this is not necessary for the x variable is because it is predefined at the startup of Sage. If you find yourself using very often the variable y (or other variables or functions), then it's possible to load them at startup by using the init.sage file, as explained in sage startup scripts.
for the questions on plotting, you may consider these functions as starting point:
implicit_plot, see implicit plots docparametric_plot for parametric plots in 2d and parametric_plot3d, see parametric plots 3d docAsked: 7 years ago
Seen: 378 times
Last updated: Apr 23 '17
Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.