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Hello,
I'm trying to make a class about limits, I want to display a sectioned function and also display its intervals and holes, like this image.
I find two problems with this:
- GeoGebra doesn't do this, so I have to create each point manually.
- The point doesn't match the border color with the line color, the border color is always black and when I choose the point style it has no background color. This can be a problem, this lead to confusion for some of my students, because the point style doesn"t match with Khan Academy (yes, my student can easily get confused).
Is there a command that do this?
How I can change the border color of a point?
The same question 
You need to set the opacity of the function graph to 100%.
If you select the last option for the point style (full point) it won't have a black border.
See the attached file. Point A and B have the same x-coordinate.
Point A is defined manually, point B is defined using the function.
GeoGebra doesn't show these discontinuity points automatically. The only command available is for removable discontinuities: https://wiki.geogebra.org/e...
Oops. I forgot a thing. If you drag the function definition from Algebra View to Graphics View, GeoGebra creates automatically a nice LaTeX text containing the function equation, like the one in the pic you posted.
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