Which of the following functions is not a sinusoid?
y = sin x
y = cosx
y = sqrt(x)
or They are all sinusoids.

Question

Which of the following functions is not a sinusoid?
y = sin x
y = cosx
y = sqrt(x)
or They are all sinusoids.

anonymous · Answer

y = sqrt(x)

lgbasallote · Answer

sqrtx...yes

anonymous · Answer

sinusoid is a mathematical function that describes a smooth repetitive oscillation

anonymous · Answer

|dw:1328886921316:dw|

anonymous · Answer

square root sorta looks like |dw:1328887057359:dw|

lgbasallote · Answer

basically...imagine a DNA but only a single helix =))))))...anyway...obviously sinxis a SINusoid...cosine is just a vertical graph of sinx so both are sinusoid

anonymous · Answer

OH! I get it now. Thank you guys :) Esp. the drawings, they were very helpful

anonymous · Answer

Yes, if you see the graph of $ y=\sqrt{x} $ it's easy to note that it's not a sinusoid. you could use this site : http://www.wolframalpha.com/

radar · Answer

The square root drawing only depicts the positive roots, imagine a similar curve on the left (quadrant II)