Page 73 - Standard Handbook Of Petroleum & Natural Gas Engineering
P. 73
62 Mathematics
I I fi-4 I fta I fi-a I fti I fi I
I
IU'(xi) =I I I 1-11 1 I
I
IhY"(xi) =I I Ill-21 1
I I + 6(b)
Ih'f'''(Xi) 51 1-11 3 1 3 1 1 I
I
(h4f' @ # e 1 I -4 I 6 I -4 I 1 I
(Xi)=I
Figure 1-53. Backward difference coefficients of o(h).
Figure 1-54. Forward difference coefficients of o(h)2.
Figure 1-55. Backward difference coefficients of o(h)*.
