Formulas Exactitud Para Diferencias de Orden Sup
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Transcript of Formulas Exactitud Para Diferencias de Orden Sup
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8/17/2019 Formulas Exactitud Para Diferencias de Orden Sup
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Fórmulas de diferencias divididas finitas hacia atrás.
Primera derivada
h
x f x f x f iii
)()()(' 1−
−=
h x f x f x f x f iiii
2)()(4)(3)(' 21 −− +−=
Segunda derivada
2
21 )()(2)()(''h
x f x f x f x f iiii
−− +−
=
2
321 )()(4)(5)(2)(''h
x f x f x f x f x f iiiii
−−− −+−
=
Tercera derivada
3
321 )()(3)(3)()('''h
x f x f x f x f x f iiiii−−− −+−
=
3
4321
2
)(3)(14)(24)(18)(5)('''
h
x f x f x f x f x f x f iiiiii
−−−− +−+−
=
Cuarta derivada
4
4321
2
)()(4)(6)(4)()(''''
h
x f x f x f x f x f x f iiiiii
−−−− +−+−
=
1 2 3 4 5
4
3 ( ) 14 ( ) 26 ( ) 24 ( ) 11 ( ) 2 ( )''''( ) i i i i i i
i
f x f x f x f x f x f x f x
h− − − − −
− + − + −=
Formulas de diferencias divididas finitas hacia adelante.
Primera derivada
h
x f x f x f iii
)()()(' 1
−=
+
h
x f x f x f x f iiii
2
)(3)(4)()(' 12
−+−=
++
Segunda derivada
2
12 )()(2)()(''h
x f x f x f x f iiii
+−=
++
2
123 )(2)(5)(4)()(''h
x f x f x f x f x f iiiii
+−+−=
+++
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8/17/2019 Formulas Exactitud Para Diferencias de Orden Sup
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Tercera derivada
3
123 )()(3)(3)()('''h
x f x f x f x f x f iiiii
−+−=
+++
3
1234
2
)(5)(18)(24)(14)(3)('''
h
x f x f x f x f x f x f iiiiii
−+−+−=
++++
Cuarta derivada
4
1234 )()(4)(6)(4)()(''''h
x f x f x f x f x f x f iiiiii
+−+−=
++++
4
12345 )(3)(14)(26)(24)(11)(2)(''''h
x f x f x f x f x f x f x f iiiiiii
+−+−+−=
+++++
Formulas de diferencias divididas finitas centrales.
Primera derivada
h
x f x f x f iii
2
)()()(' 11 −+
−=
h
x f x f x f x f x f iiiii
12
)()(8)(8)()(' 2112 −−++
+−+−=
Segunda derivada
2
11 )()(2)()(''h
x f x f x f x f iiii
−+ +−
=
2
2112
12)()(16)(30)(16)()(''
h x f x f x f x f x f x f iiiiii
−−++ −+−+−=
Tercera derivada
3
2112
2
)()(2)(2)()('''
h
x f x f x f x f x f iiiii
−−++ −+−
=
3
321123
8
)()(8)(13)(13)(8)()('''
h
x f x f x f x f x f x f x f iiiiiii
−−−+++ +−+−+−
=
Cuarta derivada
4
2112 )()(4)(6)(4)()(''''h
x f x f x f x f x f x f iiiiii−−++ −−+−
=
4
321123
6
)()(12)(39)(56)(39)(12)()(''''
h
x f x f x f x f x f x f x f x f iiiiiiii
−−−+++ −+−+−+−
=