Lower and Upper Sum

Author:
kneido
This is a dynamic worksheet that illustrates how lower and upper sums can be used to approximate the area between a function and the x-axis.
Use slider n to modify the number of rectangles used to calculate the lower and upper sum.
    [* ]Compare the values of the lower and upper sum for different values n. What do you notice?
  1. What happens to the difference, if n is small / big?