Operations with Matrices In Exercises 510, find, if possible, (a) A + B, (b) A B, (c) 2A, (d) 2A B, and (e) B + 1 2A.A = [1221], B = [3422]

HIGHER-ORDER LINEAR ORDINARY DIFFERENTIAL EQUATIONS III: Mechanical Vibrations David Levermore Department of Mathematics University of Maryland 27 March 2012 Because the presentation of this material in lecture will diﬀer from that in the book, I felt that notes that closely follow the lecture presentation might be appreciated. 7. Mechanical Vibrations 7.1. Spring-Mass Systems 2 7.2. Unforced, Undamped Motion 3 7.3. Unforced, Damped Motion 6 7.4. Forced, Undamped Motio