Question 830369: The high blood pressure of an obese individual can be modelled by the function p(t)=20sin3t+140, where p(t) represents the blood pressure, in millimetres of mercury (mmHg), and t is the time, in seconds. Determine the maximum and minimum blood pressure, in the time interval 0
So far I solved that the maximum is 160, and the minimum is 120. What i don't understand is, what do they mean with the 0 < t < 0.75 part and how do you do it?
Any help is greatly appreciated as I'm interested In knowing how this problem works.
Thanks!
Lucy
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! p(t)=20sin(3t)+140, where p(t) represents the blood pressure, in millimetres of mercury (mmHg), and t is the time, in seconds. Determine the maximum and minimum blood pressure, in the time interval 0 So far I solved that the maximum is 160, and the minimum is 120. What i don't understand is, what do they mean with the 0 < t < 0.75
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Meaning: You are to find your answers in the interval 0
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Max occurs when 3t = 90 ; t= 30
p(30) = 20*sin(90) + 140 = 20*1 + 140 = 160
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Min occurs when 3t = 180 : t = 60
P(60) = 20*sin(3*60) + 140 = 20*0 + 140 = 140
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Cheers,
Stan H.
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