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kaylalynn
 one year ago
Which of the following functions is not a sinusoid?
y = sin x
y= Sqrtx
y = cos x
None of the above are sinusoids.
kaylalynn
 one year ago
Which of the following functions is not a sinusoid? y = sin x y= Sqrtx y = cos x None of the above are sinusoids.

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ghazi
 one year ago
Best ResponseYou've already chosen the best response.2definitely \[\sqrt x\] is not a sinusoid , it doesn't vary as a sine wave or a cosine wave

kaylalynn
 one year ago
Best ResponseYou've already chosen the best response.1thats what i was thinkging thanks!!

kaylalynn
 one year ago
Best ResponseYou've already chosen the best response.1btw does a sinusoid have to go below the x axis??

ghazi
 one year ago
Best ResponseYou've already chosen the best response.2no, sinusoid wave are those which show a smooth repetitive variation or oscillation , like a sine wave or a cosine wave , it doesn't have to go below x axis, if you shift the origin up with respect to the original origin you wont have it below x axis, its just a general trend

ghazi
 one year ago
Best ResponseYou've already chosen the best response.2dw:1369863941221:dw O new is the new origin

reemii
 one year ago
Best ResponseYou've already chosen the best response.0I would say yes (it has to go below), since I take as definition that a sinusoid is a function of the form \(\lambda \sin(\alpha x + \phi)\), with \(\lambda, \alpha, \phi\in\mathbb R\). But you allow a vertical translation in your definition the answer is yes..

kaylalynn
 one year ago
Best ResponseYou've already chosen the best response.1how bout this then??

reemii
 one year ago
Best ResponseYou've already chosen the best response.0you have to find in your definition in your course. (wikipedia says that the general form allows for a vertical shift). If your definition is the general definition, then there are two sinusoid curves on this picture.
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