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September 17, 2014

September 17, 2014

Posted by **Alex** on Wednesday, April 18, 2012 at 1:49am.

- calculus -
**Steve**, Wednesday, April 18, 2012 at 5:41amsince the range is 44-90, the amplitude is (90-44)/2 = 23

The period is 24 hours, so

t = 23cos(2pi/24 x)+67

t(0) = 23cos(0)+67 = 23+67 = 90

t(12) = 23cos(2pi/24 * 12)+67 = 23cos(pi)+67 = -23+67 = 44

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