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Величко Арсений Александрович
ode-solver-2021
Commits
0ac663f1
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Commit
0ac663f1
authored
Dec 25, 2021
by
Величко Арсений Александрович
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implemented static solvers
parent
661b2cb5
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static_solvers.py
src/static_solvers/static_solvers.py
+41
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src/static_solvers/static_solvers.py
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0ac663f1
import
typing
as
tp
# TODO Метод левых прямоугольников
def
left_rectangle_method
(
fx
:
tp
.
Callable
[[
float
],
float
],
a
:
float
,
b
:
float
,
steps
:
int
)
->
float
:
pass
"""Метод левых прямоугольников"""
h
=
(
b
-
a
)
/
steps
x
=
a
area
=
0.0
for
_
in
range
(
steps
):
area
+=
h
*
fx
(
x
)
x
+=
h
# TODO Метод правых прямоугольников
def
right_rectangle_method
(
fx
:
tp
.
Callable
[[
float
],
float
],
a
:
float
,
b
:
float
,
steps
:
int
)
->
float
:
pass
return
area
def
right_rectangle_method
(
fx
:
tp
.
Callable
[[
float
],
float
],
a
:
float
,
b
:
float
,
steps
:
int
)
->
float
:
"""Метод правых прямоугольников"""
h
=
(
b
-
a
)
/
steps
x
=
a
+
h
area
=
0.0
for
_
in
range
(
steps
):
area
+=
h
*
fx
(
x
)
x
+=
h
return
area
# TODO Метод трапеций
def
trapezium_method
(
fx
:
tp
.
Callable
[[
float
],
float
],
a
:
float
,
b
:
float
,
steps
:
int
)
->
float
:
pass
"""Метод трапеций"""
h
:
float
=
(
b
-
a
)
/
steps
ans
:
float
=
0.0
x
:
float
=
a
for
_
in
range
(
steps
):
ans
+=
h
*
(
fx
(
x
)
+
fx
(
x
+
h
))
/
2
x
+=
h
return
ans
# TODO Метод парабол
def
parabola_method
(
fx
:
tp
.
Callable
[[
float
],
float
],
a
:
float
,
b
:
float
,
steps
:
int
)
->
float
:
pass
def
parabola_method
(
fx
:
tp
.
Callable
[[
float
],
float
],
a
:
float
,
b
:
float
,
steps
:
int
)
->
float
:
"""Метод парабол"""
if
steps
%
2
==
1
:
steps
+=
1
# TODO Метод переменного шага: Двойной пересчет
def
double_count_method
(
fx
:
tp
.
Callable
[[
float
],
float
],
a
:
float
,
b
:
float
,
steps
:
int
)
->
float
:
pass
h
:
float
=
(
b
-
a
)
/
steps
summa
:
float
=
fx
(
a
)
+
4
*
fx
(
a
+
h
)
+
fx
(
b
)
for
i
in
range
(
1
,
int
(
steps
/
2
)):
summa
+=
2
*
fx
(
a
+
(
2
*
i
)
*
h
)
+
4
*
fx
(
a
+
(
2
*
i
+
1
)
*
h
)
# TODO Метод переменного шага: Некий секретный алгоритм
def
mysterious_method
(
fx
:
tp
.
Callable
[[
float
],
float
],
a
:
float
,
b
:
float
,
steps
:
int
)
->
float
:
pass
return
summa
*
h
/
3
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