For a Person at Rest, the Velocity V (In Liters

For a person at rest, the velocity v (in liters per second) of airflow during a respiratory cycle (the time from the beginning of one breath to the beginning of the next) is given by ​ ,
​
Where t is the time (in seconds) .
(Inhalation occurs when v > 0 and exhalation occurs when v < 0.)
​
Find the number of cycles per minute.
​

A) 14 cycles/min
B) 11 cycles/min
C) 10 cycles/min
D) 15 cycles/min
E) 12 cycles/min

Correct Answer:

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