Yahoo Answers: Answers and Comments for Sinusoidal Functions Help?? [Mathematics]
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From Anonymous
enUS
Mon, 27 May 2019 01:02:53 +0000
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Yahoo Answers: Answers and Comments for Sinusoidal Functions Help?? [Mathematics]
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https://answers.yahoo.com/question/index?qid=20190527010253AANj70o
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From az_lender: (a) The amplitude of 5 implies a range of 10,...
https://answers.yahoo.com/question/index?qid=20190527010253AANj70o
https://answers.yahoo.com/question/index?qid=20190527010253AANj70o
Mon, 27 May 2019 01:23:58 +0000
(a) The amplitude of 5 implies a range of 10, so the minima are at y = 7. The period of 120 implies a halfperiod of 60 deg, so there are minima at x = 30, +90, etc. Note that x = 0 is halfway between 30 and +30, so there is no phase shift if we write the function as a sine.
(b) y = 5*sin(3x)  2.
(c) y = 5*cos(90  3x)  2.