| To continue, we should locate x1 on the x-axis
and draw a vertical line to the graph of xn+1 = f(xn). |
| However, there is an easier way. |
| From the point (x0, x1),
draw the horizontal line to the graph xn+1 = xn. |
| All points on a horizontal line have the same y-coordinate, x1 for this line. |
| Consequently, the point of interesction of this line and the graph of
xn+1 = xn has y-coordinate x1. |
| But all
points on the line xn+1 = xn have the same x- and y-coordinates,
so the point of intersection is (x1, x1). |
| Note a vertical line through this point also passes through the point x1 on the
x-axis. |
| Click the picture to see the next step. |
