Plot/Show Png/jpg in sagemath worksheet

edit

Awesome! so easy :) If you try to google this. You very complicated solutions!

Is there a way to hide line, it looks ugly: https://cocalc.com/share/8668c880-b85... maybe a better way? I mean you could do everything by hand, enter equation, would look more nicely,....but there is a huge downsize,....making something like this, takes too much time.

Try adding %hide before the %md.

How can I later edit the cell? After its "hidden"?

You can double-click the sell to unhide it.