What is the amplitude of -sin(x/5 - p)

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Homework Help Overview

The discussion revolves around determining the amplitude of the function f(x) = -sin(x/5 - p). Participants are exploring the properties of the sine function and the implications of the negative sign in front of it.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Some participants assert that the amplitude is -1 based on the coefficient of the sine function, while others question this interpretation, suggesting that amplitude should be considered as a positive value.

Discussion Status

The discussion is active, with differing views on the definition of amplitude. Some participants have provided guidance regarding the standard interpretation of amplitude as a positive quantity, indicating that the quiz system's marking may reflect this understanding.

Contextual Notes

There is mention of a quiz system marking responses as incorrect, which raises questions about the definitions and expectations regarding amplitude in the context of the problem.

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if f(x) = - sin(x/5 - p) are given, then the amplitude must be -1, correct??
 
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fr33pl4gu3 said:
if f(x) = - sin(x/5 - p) are given, then the amplitude must be -1, correct??

Thread moved to homework help. Please take care to post homework and coursework type questions in the Homework Help forum section of the PF, and not in the general technical forums.

In answer to your question, yes, the amplitude coefficient in front of the sin function is A=-1.


(EDIT -- See farther down the thread where the magnitude of "amplitude" is discussed... my answer here is wrong)
 
Last edited:


But the quiz system marked me incorrect?? why??
 


yes, solve it, the amplitude is -1, but got the symbol ||, so it turns positive.
 


You were marked wrong because "amplitude" is always positive: here it is 1, not -1.
 

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