# Fourier Series Homework Check

## Homework Statement

Determine the first three terms in the Fourier trigonometric series for the function shown below.

## Homework Equations

Look at attached jpeg. This tex tool is terrible. After making correction to the code, the preview still shows previous preview posts.

## The Attempt at a Solution

See attached jpeg for solution and the other attachment for the function. Did I define the function correctly? I didn't solve for bn because this function is symmetric about the y-axis.

First three terms mean a0, a1, and a2 right?
Or is it n=1, 2, 3

## The Attempt at a Solution

#### Attachments

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