<span>The
answer to this question is electrocardiogram. Electrocardiogram or ECG is a
test that records the patient’s heartbeat and checks the electrical activity of
the patient’s heart. The electrodes that are placed on the skin of the patient
to capture the magnitude of the heart’s electrical depolarization and to check
any presence of heart muscle damage. </span>
The goal is to stay fit and healthy.
Answer:

Explanation:
Given,
The original amount of the medicine in the body = 200 mg,
If the amount of medicine in his body will be one half of the amount from the previous hour.
Then the amount of the medicine after 1 hour = 
After 2 hours, the amount = 
After 3 hours, the amount = 
....... so on,
Thus, after t hours the amount ( say A(t) )

If A(t) < 1 mg

Which is the required inequality..