MATH 224 - CHECKLIST FOR TEST 1 (WEDNESDAY, SEP. 23)
The test will cover Chapter 1 (except for sections 1.4 and 1.7). Here are the topics/skills to review:
A. Understanding the basics of differential equations:
-when a given function is a solution
-when a given graph represents a solution
-same for initial value problems
B. Modeling (a word problem): simple population models, mixing problems etc.
Sample exercises: 1.1.7,8,17; 1.2.39,42; Chapter Review 48,53,54
C. Qualitative Analysis (mostly, but not exclusively, for autonomous equations):
-finding equilibria and classifying them
-sketching phase lines
Sample exercises: 1.6.1-12
-rough sketches of solution graphs based on phase lines
-long term behavior of solutions
Sample exercises: 1.6.13-27
-rough sketches of solution graphs based on slope fields
Sample exercises: 1.3.7-10
-matching equations with slope fields/phase lines
Sample exercises: 1.3:16; 1.6:37, Chapter Review 49
D. Recognizing known classes of equations (separable, linear, etc.) and solving
equations/initial value problems analytically, if feasible
Sample exercises: Chapter Review 21-39
E. Checking the hypotheses of and drawing conclusions from the
Existence/Uniqueness theorem
Sample exercises: 1.5:1-16
You are not expected to go over all "Sample exercises"; just make sure that you
are reasonably comfortable with each type of questions.
Generally, going over homework assignments and particularly solving problems
similar to those that were assigned is a good pre-test practice.
It is also a good idea to go over exercises 11-20 in the review section;
they are good indicators of whether or not you mastered the material.
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