For a person at rest, the velocity v (in liters per second) of air flow into and out of the lungs during a respiratory cycle is given by 
, where t is the time in seconds. Inhalation occurs when 
and exhalation occurs when ![]()
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?
A. 
seconds
B. 
seconds
C. 6 seconds
D. 
seconds
E. 3 seconds
Answer: C
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have a tangent at the origin? Give reasons for your answer.
What will be an ideal response?
Graph.
- 
= 1
A. 
B. 
C. 
D. 
Find a cofunction with the same value as the given expression.tan 75°
A. sec 75° B. cot 15° C. cot 165° D. cot 75°
Provide an appropriate response.Assuming r = f(?) is continuous for 
and 
what can be said about the relative areas between the origin and the polar curves r = f(?), ? ? ? ? ?and r = 2f(?), ? ? ? ? ? ?Give reasons for your answer.
What will be an ideal response?