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Measure value of given function in pollutant standard index

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Reference no: EM131563274

Question: Air pollution the level of ozone, an invisible gas that irritates and impairs breathing, present in the atmosphere on a certain may day in the city of riverside was approximated by

A(t)  = 1.0974t3 - 0.0915t4             (0 ≤ t ≤ 11)

Where a(t) is measured in pollutant standard index (psi) and t is measured in hours, with t = 0 corresponding to 7 a.m. Use the second derivative test to show that the function a has a relative maximum at approximately t = 9. Interpret your results.

Reference no: EM131563274

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