Math 267, Fall 2021, Practice Exam 1-1

0:00 Introduction
1:22 Problem 1 -- radioactive decay
8:06 Problem 2 -- linear first-order
15:11 Problem 3 -- homogeneous ODE
31:15 Problem 4 --- find/classify critical points for autonomous ODE
36:36 Problem 5 -- constant coefficient linear homogeneous ODE
40:08 Problem 6 -- spring-mass system