# Ordinary Differential Equations, Kreider, Fall 2018

Policy sheet and syllabus

Suggested homework problems

Anticipated schedule

Office Hours: 11:00-12:00 daily and by appointment, CAS 220

Learning Assistant: Jacob Liddy, jpl61@zips.uakron.edu

Hours: Monday 4:30-6:30pm, Thursday 3:00-5:00pm, Bierce Library bottom floor

## Collected Work Schedule

HW1 key

HW2 key

HW3 key

HW4 key

## Sundries

#### Exam 1 material

Integration review

Visualizing solutions

Direction Fields

An implicit solution: -xy+y*sin^2(x)+2*exp(xy^2)=3

First Order Application Worksheet

Application Worksheet Annotations

Note on exact equations

Preparation for Exam 1

Quick Skills Review for Exam 1

Quick Skills Review for Exam 1: Key

Practice Problems

Practice Problem Answers

Exam 1 Sample A (ignore problem #1)

Exam 1 Sample A Key

Exam 1 Sample B

Exam 1 Sample B Key

#### Exam 2 material

Euler's Formula

Higher Order Solution Forms

Undetermined coefficient examples

Answer Key for Spring Mass Worksheet

Interpretation of spring mass systems

Some second order problems

Second order answer key

Setting up spring mass problems

Concept Worksheet for Exam 2

Concept Worksheet answer key

Exam 2 Class Review Sheet

Exam 2 Class Review Answers

Preparation for Exam 2

Quick Skills Review for Exam 2

Quick Skills Review for Exam 2: Key

Exam 2 Sample A

Exam 2 Sample A Key

Exam 2 Sample B

Exam 2 Sample B Key

#### Exam 3 material

Laplace Transform Table

Partial fraction forms

Partial fraction examples

Example A details

Shifting examples

Preparation for Exam 3

Quick Skills Review for Exam 3

Quick Skills Review for Exam 3: Key

Typical types of problems

Typical types: solutions

Exam 3 Sample A

Exam 3 Sample A Key

Exam 3 Sample B

Exam 3 Sample B Key

A series example with and without sigma notation, to show the sigma notation helps at the end of a problem

Preparation for Final Exam