Electrical energy use. The rate at which electrical energy is used by the Ortiz family, in kilowatt-hours (kW-h) per day, is given by
where t is time, in hours. That is, t in the interval
a. How many kilowatt-hours does the family use in the first T house of a day
b. How many kilowatt-hours does the family use in the first 4 house of a day?
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Calculus and Its Applications (11th Edition)
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