Suppose f"(x) = N(h) + a,h² + azh* + agh6 +.. The value of N,(h) using Richardson's extrapolation is: O N2 (h)=(4N1(h/2)-N1 (h))/3 with error of order O(h^2) N2 (h)=2N1 (h/2)-N1 (h) with error of...

Extracted text: Suppose f"(x) = N(h) + a,h² + azh* + agh6 +.. The value of N,(h) using Richardson's extrapolation is: O N2 (h)=(4N1(h/2)-N1 (h))/3 with error of order O(h^2) N2 (h)=2N1 (h/2)-N1 (h) with error of order 0(h^2) N2 (h)=(4N1(h/2)-N1 (h))/3 with error of order O(h^4 ) N2 (h)=2N1 (h/2)-N1 (h) with error of order O(h)