Summing cosines of sines and cosines

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SUMMARY

The discussion revolves around the mathematical expression for summing cosines of sines and cosines, specifically the equation \sum_{t=0}^{n-1}cos(2 \pi ft)(x_{t}- \mu - Acos(2 \pi ft) - Bsin(2 \pi ft)). Participants express confusion regarding the manipulation of the cosine term after summation. The key takeaway is the need to clarify the summation process and the role of cosine in the context of the given formula.

PREREQUISITES
  • Understanding of trigonometric functions, specifically cosine and sine.
  • Familiarity with summation notation and its applications in mathematical expressions.
  • Basic knowledge of statistical terms such as mean (μ) and their implications in data analysis.
  • Experience with MATLAB for computational implementation of mathematical formulas.
NEXT STEPS
  • Research the properties of cosine and sine functions in summation contexts.
  • Learn how to implement summation of trigonometric functions in MATLAB.
  • Explore the concept of Fourier series and its relation to cosine and sine summations.
  • Study statistical analysis techniques involving means and their applications in signal processing.
USEFUL FOR

Students in mathematics or engineering, data analysts, and anyone involved in signal processing or computational mathematics will benefit from this discussion.

matlabber
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Homework Statement



[tex]\sum_{t=0}^{n-1}cos2 \pi ft(x_{t}- \mu-Acos2 \pi ft-Bsin2 \pi ft)[/tex]

Homework Equations


The Attempt at a Solution


I know to set = 0
I just am not knowing what to do with the cos after the sum...how do I take this sum?
 
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hi matlabber! :smile:

i suspect they mean [itex]\sum_{t=0}^{n-1}(cos2 \pi ft)(x_{t}- \mu-Acos2 \pi ft-Bsin2 \pi ft)[/itex] :wink:
 

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