Chapter 5.4, Problem 91AYU

Blood Pressure Blood pressure is a way of measuring the amount of force exerted on the walls blood vessels. It is measured using two numbers: systolic (as the heart beats) blood pressure and diastolic (as the heart rests) blood pressure. Typical blood pressure is, which means the systolic blood pressure is $120$ mmHg and diastolic blood pressure $80$ mmHg. Assuming that a person’s heart beats $70$ times per minute, the blood pressure $P$ of an individual after t seconds can be modelled by the function

$P(t)=20\sin \left(\frac{7}{3}\pi t\right)+100$

Graph this function for two periods.