Use the values N(h), N(h/3), and N(h/9) to produce an O(h6) approximation to M.
Response to the following:
1. Suppose that N(h) is an approximation to M for every h > 0 and that
M = N(h)+K1h2+K2h4+K3h6+.....
For some value K1, K2, K3... Use the values N(h), N(h/3), and N(h/9) to produce an O(h6) approximation to M.