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Nov 12th, 2014
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  1. A statistical study showed that since 1990, the number of households with a computer in a city is given by the following formula : f (t ) = ...., where t is the number of years elapsed since 1990.
  2. We suppose that f (t) is a good approximation, at least until 2010, of the number of households equipped with a computer in this city.
  3. Find an approximate value of the average percentage of households equipped with a computer since the beginning of 1997 until the beginning of 1999.
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