Announcements
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May 14 Here is the final exam / course grading guide. Details about exam pick-up and final grade shortly.
May 8. Hints for some of the P.O.Days will be posted tomorrow.
May 8 CS 422 Final : Monday, May 12, 9-11:30AM, Hollister 314.
May 8. A6 is graded. You can pick them up at office hours. For P3, you'll note that the score has the form a+b where a is for methodology (max 3 points) and b is for results (max 2points). You might be interested in the script ShowMyError which shows all the solutions obtained by the class.
May 2. Good review questions from the text:
Chapter 4: 4.1-4.32, 4.42-4.46
Chapter 5: 5.1-5.19, 5.23-5.29
Chapter 6: 6.1-6.12, 6.21, 6.25, 6.34, 6.37
May 2: Study week office hours: TWThF 1:30-3:00
April 30. Hints for P3. (a) Let phi be the angle between the true Earth-to-Mars vector and the positive x-axis. Plot how much phi changes from day-to-day. When "delta phi" is negative, Mars is "backing up" and that is a time when your model will be stressed. (b) How long does it take before the Sun, Earth and Mars are again collinear with Earth in the middle?
(c) Think about the case when E and M follow uniform circular motion. (d) Solve the problem when you just have one circle. Then fixing that big circle "rpm", solve the 2-circle problem. Then fixing the two inner circles, play with the outer circle. (e) The radii get smaller. Maybe (1,1/2,1'4) is a good radii sequence.
April 30. MAKE SURE YOU FILL OUT THE COURSE EVALUATION
http://courseeval.cornell.edu/evaluation/index.cfm
April 21 A function SetUp is available for computing the exact locations of earth and mars at specified times. The script ShowMotion illustrates its use.
April 18 A6 is available. A useful ellipse fact sheet is here.
April 16 Prelim 2 grading guide.