Find the years when the model has a relative maximum

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Reference no: EM131793701

Using U.S. Census Bureau data since 1870, the average number of acres per U.S. farm can be modeled with the function

A(t) = -0.000377t³ + 0.1021t² - 4.731t + 174.3

where t is the number of years past 1870.

(a) Find the years when the model has a relative maximum and a relative minimum.

(b) What changes in our society and in the economy during the last half of the 20th century have caused A(t) to increase then?

Reference no: EM131793701

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