Math 114 - N. Rimmer
Videos of example problems fully worked out
Inspired by Khan Academy

Chapter 12
Section 12.1 Intro. to Cartesian 3-Dimensional Coordinate System  Example 1
Section 12.2 Intro. to Vectors  MyMathLab #10
Section 11.6 Conic Sections  Example 1
Section 12.3 The Dot Product  General Dot Product Question   Application:  Work on an incline 
Section 12.4 The Cross Product  Example 1 
Section 12.5 Equations of Lines and Planes  Example 1    Example 2    Example 3