Understanding Period and Frequency in Composite Sine Functions

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Discussion Overview

The discussion revolves around the addition of two sine functions with different frequencies, specifically focusing on how this affects their period and frequency. Participants explore relationships and identities related to sine functions and seek methods for analyzing composite sine waveforms.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant inquires about the effects on period and frequency when adding two sine functions with different frequencies.
  • Another participant expresses familiarity with the concept of period but seeks clarification on the term "frequency" and its relation to trigonometric functions.
  • A participant mentions the trigonometric identity for the sum of sine functions, suggesting it may be relevant to the discussion.
  • Further inquiry is made about identifying the constituent sine functions from a composite graph, indicating a desire for additional relationships or methods beyond those already mentioned.
  • A link to a Wikipedia page on Fourier series is provided as a potential resource for understanding the composition of sine functions.

Areas of Agreement / Disagreement

The discussion does not reach a consensus, as participants express varying levels of understanding and seek different aspects of the topic. Multiple viewpoints and questions remain unresolved.

Contextual Notes

Participants express uncertainty regarding the definitions and relationships between period and frequency in the context of sine functions, indicating a need for further clarification and exploration of these concepts.

Who May Find This Useful

This discussion may be of interest to those studying trigonometric functions, signal analysis, or anyone looking to understand the composition of waveforms in mathematics and physics.

Cluelessness
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Hey all!
I have a question concerning the addition of 2 sine functions.
Could anyone point me to the right direction as to what happens to the period and frequency when two sine functions are added together?
Note: when adding, these two functions possesses two different frequencies.
Thanks in advance! :D
 
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Cluelessness said:
Hey all!
I have a question concerning the addition of 2 sine functions.
Could anyone point me to the right direction as to what happens to the period and frequency when two sine functions are added together?
Note: when adding, these two functions possesses two different frequencies.
Thanks in advance! :D



I know what period of a trigonometric function is, but I can't say the same of "frequency" though

this seems to be a term from physics related to the inverse of the function's argument times 2\pi ...

Anyway, we have the trigonometric identity \sin x+\sin y=2\sin \frac{x+y}{2}\cos\frac{x-y}{2} .

DonAntonio
 
Thanks DonAntonio :D
But do you happen to know any other relationships apart from Simpsons' or Werner's?
My dilemma is, given a graph, how would you figure out what it is made up of? i.e what sine functions were added to produce that graph?
I just need a hint - do you happen to know any thing else which could help me?
 

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