Jeff invests an amount at 4% interest compounded annually. After 3 year he has 1687.30, What was the original amount jeff invest
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By the definition for the absolute value,
So for the compound function
, there are three intervals to consider. What happens when 
? when 
? when 
?
You have
So for the compound function
You have
The distance between the two points is
The polar coordinate of A is
The polar coordinate of B is
Explanation:
The two points are and
The distance between two points is given by,
Thus, the distance between the two points is
The polar coordinates of A can be written as
Distance =
Substituting , we get,
Distance =
To make the angle positive, let us add 360,
The polar coordinate of A is
Similarly, The polar coordinate of B can be written as
Distance =
Substituting , we get,
Distance =
To make the angle positive, let us add 360,
The polar coordinate of B is