Suppose f"(x) = N,(h) + a,h+ azh³ + azh5 + …- ... The value of N2(h) using Richardson's extrapolation is: N2 (h)=(4N1(h/2)-N1 (h))/3 with error of order 0(h^2 ) N2 (h)=(4N1(h/2)-N1 (h))/3 with error...

Extracted text: Suppose f"(x) = N,(h) + a,h+ azh³ + azh5 + …- ... The value of N2(h) using Richardson's extrapolation is: N2 (h)=(4N1(h/2)-N1 (h))/3 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^2) N2 (h)=2N1 (h/2)-N1 (h) with error of order O(h^3) *