• Support PF! Buy your school textbooks, materials and every day products Here!

Fourier Series

  • Thread starter andre_1
  • Start date
  • #1
2
0

Homework Statement



Find the term a2 in the following fourier seies:


[4+5 (cos x )^2]^(1/2) dx= ao + a2 cos (2x) + a4 cos (4x)

The Attempt at a Solution


The only thing I can think about is transforming that to complex numbers but I am not completely sure...

I know that a0 is supposed to be 3.966360

Thanks!
 

Answers and Replies

  • #2
HallsofIvy
Science Advisor
Homework Helper
41,833
956
Is that an integral on the left side? Are you asked to write
[tex]\int\sqrt{4+ 5 cos^2(x)} dx[/tex]
as a Fourier series?
 

Related Threads on Fourier Series

Replies
5
Views
9K
  • Last Post
Replies
21
Views
1K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
4
Views
572
  • Last Post
Replies
12
Views
1K
  • Last Post
Replies
6
Views
3K
  • Last Post
Replies
3
Views
640
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
8
Views
1K
Top