This exercise concerns deriving finite difference approximations of derivatives. (a) Derive a ( 2 ) approximation of  ’( j ) that uses ( j ), ( j −1 ), and ( j +2 ). (b) Derive a ( 2 ) approximation...


This exercise concerns deriving finite difference approximations of derivatives.


(a) Derive a
(
2) approximation of
 ’(

j

) that uses
(

j

),
(

j−1
), and
(

j+2
).


(b) Derive a
(
2) approximation of
 ’(

j

) that uses
(

j

),
(

j−1
), and
(

j+2
).


(c) Derive a
(
2) approximation of
 ’(

j

)  that uses
(

j

),
(

j−1
), and
(

j+2
). Also, explain how your answer can also be obtained from one of the formulas in Table 7.1.

Nov 14, 2021
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