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irada chinnachat
numer-60-2
Commits
44dc0ab4
Commit
44dc0ab4
authored
Feb 22, 2018
by
irada chinnachat
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งานในห้อง
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hw06.py
week06/hw06.py
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week06/hw06.py
0 → 100644
View file @
44dc0ab4
def
Ab2Uc
(
A
,
b
)
import
numpy
as
np
A
=
np
.
array
([
[
4
,
-
2
,
1
],
[
-
2
,
4
,
-
2
]
[
1
,
-
2
,
4
]
],
float
)
b
=
np
.
array
([
11
,
-
16
,
17
],
float
)
n
=
len
(
b
)
for
k
in
range
(
0
,
n
-
1
):
for
i
range
(
k
+
1
,
n
):
lam
=
A
[
i
,
k
]
/
A
[
k
,
k
]
A
[
i
,
k
]
=
0
A
[
i
,
k
+
1
:
n
]
=
A
[
i
,
k
+
1
:
n
]
-
lam
*
[
k
,
k
+
1
:
n
]
b
[
i
]
-=
lam
*
b
[
k
]
U
=
A
.
copy
()
c
=
b
.
copy
()
print
(
"U = "
)
print
(
U
)
print
()
print
(
"c = "
,
c
)
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