Visualizing Absolute Max/Min of Multivariable Function on a region with GeoGebra 3D

Solving one of these by hand: https://youtu.be/ix0EqLRpdBU

In this video we use GeoGebra 3D to visualize the part of a surface above or below a given region in the xy-plane so we can see what we're doing when we solve optimization problems for multivariable functions. We use a lot of features: graphing 3d functions, graphing planes, finding traces of a surface in a plane using the curve command, and graphing only part of a surface using an if command with conditions determined by the constraints. You definitely need to know that && is how we do an "and" for the constraints in the if command.

This is a great way to look at these sorts of problems in multivariable calculus.

Видео Visualizing Absolute Max/Min of Multivariable Function on a region with GeoGebra 3D канала turksvids