On the interval 0 to 1 vertical lines are drawn at the points where is an odd positive integer. The height of the lines at 0 and 1 are 1 unit, the height of the line at is unit, the height of the line at and is unit and the height of the line at is for all values of .
Now consider the line where . How many of the vertical lines from to does it cut? What happens to the heights of these lines as gets larger? What happens to the number of lines cut as gets larger?