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Breathing is cyclic and a full respiratory cycle from the beginning of inhalation to the end...

Breathing is cyclic and a full respiratory cycle from the beginning of inhalation to the end of exhalation takes about 3 s. The maximum rate of air flow into the lungs is about 0.6 L/s. This explains, in part, why the function f(t) = 3/5 sin(2pit/3) has often been used to model the rate of air flow into the lungs. Use this model to find the volume of inhaled air in the lungs at time t.

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