What is the Definition of Period in Fourier Series?

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SUMMARY

The discussion centers on the definition of "period" in Fourier series, specifically addressing the importance of stating the period as a definitive value, which is often misunderstood. The period is defined as a fixed number, specifically noted as \(2\pi\) in the problem statement. The user provided a solution involving coefficients \(a_0 = 4\) and \(a_n = \frac{8}{\pi n}\), but was corrected for not explicitly stating the period in their answer. The discussion emphasizes the necessity of clarity in mathematical definitions when solving problems related to Fourier series.

PREREQUISITES
  • Understanding of Fourier series concepts
  • Familiarity with mathematical notation and terminology
  • Basic knowledge of plotting functions
  • Ability to interpret and manipulate series coefficients
NEXT STEPS
  • Study the properties of Fourier series, focusing on period determination
  • Learn how to derive Fourier coefficients for different functions
  • Explore graphical representation of Fourier series using tools like Python's Matplotlib
  • Investigate the implications of period in signal processing applications
USEFUL FOR

Students studying mathematics, particularly those focusing on Fourier analysis, educators teaching Fourier series concepts, and anyone involved in signal processing or related fields.

CannonSLX
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Homework Statement


0d7bb6c8f8b39c7cc0d4d98cef9661b0.png


Homework Equations


a0980d6588001a382ea35f5773e32db9.png


The Attempt at a Solution


a0=4
an=8/Pi*n

Heres a written solution
https://gyazo.com/57e11d1e7a360914db8aec167beb6b39.png
 
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In the future, please be sure to UPLOAD images rather than use externally hosted links. Here is your solution UPLOADed:

PF work 01.png
 
Strictly speaking, your answer for (i)(b) is wrong since you didn't state the period. Note the phrase "of period ##2\pi##" in the problem statement for (ii). It's not a range of values for ##x##. It's a number. What exactly is the definition of the term period?

If you want to check your answer for (ii), just plot the series.
 

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