The 3rd LiveMath document (IT4AMIntegArea3.thp) shows the
same speed-time graph of the car but with a different series of rectangles.
They have the same width (for the same n = 4) but they cover the curve
instead. Please note that the height of the first rectangle is f(1) instead
of f(0) in the Lower Riemann Sum Method.
Question 9:
As all these rectangles cover the curve, will the sum of
the areas of the rectangles be greater or less than the actual area under
the curve?
The sum of the areas of these rectangles is called
the Upper Riemann Sum.
Question 10:
Complete the following statement:
__________ Sum < Area < _________ Sum