Learning objectives

• Visualize differential equations as slope fields and vector fields
• Go back and forth between 1st order DEs and systems of 2 first order DEs
• Explore models based on planar systems

In class

• Notes on planar systems: slope fields, vector fields, inexact differentials, contours
• Matlab for vector fields, slope fields, and streamlines
• Some problems

On your own

• Mathematica for slope fields and planar systems