There is no homework for March 9. But, please read section 3.1. Also, bring a rubber band to class. Text pdf version and Maple accompaniment . The open and closed pipe, and conservation of wave energy.
Maple sheet illustrating how moving waves going in opposite directions add to a standing wave.
Maple file . Maple sheet illustrating and calculating the first two vibration modes of an antenna. Antenna Maple sheet. A harmonic function on a disk. And, the quirky integral from the Vigre pizza party. link here.