A company sells S(t) thousand electric blankets in month t (with t = 0 being January)
Chapter 8, Problem 8.2.39(choose chapter or problem)
A company sells S(t) thousand electric blankets in month t (with t = 0 being January), where S(t) 72.25 + 41.5 sin t 6 + 2 . Graph this function over one year. Find its period and amplitude and explain their practical significance. 4
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