Day 58 in MAT229

Today:

• Announcements:
  • HW 10 is due today.

  • Tomorrow we review.

  • Monday: hour exam, over chapter 10 and 12 stuff.

    You may use your favorite calculator, and a one-page cheat sheet.

  • Next Thursday, 5/9 -- the comprehensive part

    You may use your favorite calculator, and a one-page cheat sheet.

• Today:
  • We want to use our understanding of
    • dot products
    • cross products
    • calculus
    to understand why planets travel in ellipses (Kepler's first law):
    

    (Here's some associated Mathematica code to illustrate the text, and extend it.)