How to create a semicircle in the 3D graphing Simulator?
Hi, I am currently doing a math final paper, and I need help creating half of a sphere in the 3D graphing simulator. I am trying to create a model of Einstein's theory of relativity, and I already have the plane for the fabric of spacetime. I need to add in half of a sphere, but I am unsure how to limit the domain of the sphere to only create half of it, not the whole thing. I know the command to create the whole sphere, I just need to know how to cut it in half, like a bowl.