# Mathematics 255 - Ordinary differential equations

Spring term

Section 201

10:30--11:30 M W F

Buchanan D339

The important differences between this and other sections:

There is no required text. All material will be covered in notes handed out
in class.

Some computer work will be required.

## Course notes

Here are PostScript files of hand outs so far:

### Course outline

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Course outline
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### First order equations

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First order differential equations
**

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Some slope field plots
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Complex exponentials
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### Numerical methods

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Newton's method
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A somewhat better numerical method
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Error and step size
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**
First order
numerical methods
**

### Second order equations

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Periodic functions
**

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Impulse response
**

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Second order equations
**

**
Inhomogeneous second order equations
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**
Inhomogeneous second order equations II
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## Homework and solutions

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First homework
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Second homework
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Third homework
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Fourth homework
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Fifth homework
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Sixth homework
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Midterm solutions
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**
First homework solutions
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Second homework solutions
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**
Third homework solutions
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Fourth homework solutions
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**
Fifth homework solutions
**