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Calculating an average value of a function

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The temprature recorded in a city during a given day approximately followed the curve of T=0.00100t^4-0.280t^2+25 where t is the number of hours from noon (-12hours < t < 12hours). What is the average during the day. a=0, b=5

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The expert calculates an average value of a function.

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Recall that the average value of f(t) from a to b is (integrate ...

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