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9
Solve the system of equations [ILL 1974]
Solve the system of equations [ILL 1974]
Source:
January 2, 2011
parameterization
algebra proposed
algebra
Problem Statement
Solve the following system of linear equations with unknown
x
1
,
x
2
…
,
x
n
(
n
≥
2
)
x_1,x_2 \ldots, x_n \ (n \geq 2)
x
1
,
x
2
…
,
x
n
(
n
≥
2
)
and parameters
c
1
,
c
2
,
…
,
c
n
:
c_1,c_2, \ldots , c_n:
c
1
,
c
2
,
…
,
c
n
:
2
x
1
−
x
2
=
c
1
;
2x_1 -x_2 = c_1;
2
x
1
−
x
2
=
c
1
;
−
x
1
+
2
x
2
−
x
3
=
c
2
;
-x_1 +2x_2 -x_3 = c_2;
−
x
1
+
2
x
2
−
x
3
=
c
2
;
−
x
2
+
2
x
3
−
x
4
=
c
3
;
-x_2 +2x_3 -x_4 = c_3;
−
x
2
+
2
x
3
−
x
4
=
c
3
;
⋯
⋯
⋯
\cdots \qquad \cdots \qquad \cdots \qquad
⋯
⋯
⋯
−
x
n
−
2
+
2
x
n
−
1
−
x
n
=
c
n
−
1
;
-x_{n-2} +2x_{n-1} -x_n = c_{n-1};
−
x
n
−
2
+
2
x
n
−
1
−
x
n
=
c
n
−
1
;
−
x
n
−
1
+
2
x
n
=
c
n
.
-x_{n-1} +2x_n = c_n.
−
x
n
−
1
+
2
x
n
=
c
n
.
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