高数,需要过程~谢谢 20
1个回答
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A =
1 1 1 1 5
2 1 -3 1 3
3 -6 1 -1 5
1 0 -1 1 3
化为行最简矩阵
=
1 0 0 0 2
0 1 0 0 0
0 0 1 0 1
0 0 0 1 2
x1 = 2, x2 = 0, x3 = 1, x4 = 2
(2)
B =
1 1 1 -1 1
-2 3 4 -1 7
0 1 -3 1 4
1 1 -1 1 7
化为行最简矩阵
=
1 0 0 0 1
0 1 0 0 3
0 0 1 0 1
0 0 0 1 4
x1 = 1, x2 = 3, x3 = 1, x4 = 4
1 1 1 1 5
2 1 -3 1 3
3 -6 1 -1 5
1 0 -1 1 3
化为行最简矩阵
=
1 0 0 0 2
0 1 0 0 0
0 0 1 0 1
0 0 0 1 2
x1 = 2, x2 = 0, x3 = 1, x4 = 2
(2)
B =
1 1 1 -1 1
-2 3 4 -1 7
0 1 -3 1 4
1 1 -1 1 7
化为行最简矩阵
=
1 0 0 0 1
0 1 0 0 3
0 0 1 0 1
0 0 0 1 4
x1 = 1, x2 = 3, x3 = 1, x4 = 4
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