有限数学 示例

求枢轴位置(主元位置)和主列 r^2+(-3)r=[[1,9,-4,-7],[3,5,8,1],[-2,7,8,9]]
解题步骤 1
求行简化阶梯形矩阵。
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解题步骤 1.1
Perform the row operation to make the entry at a .
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解题步骤 1.1.1
Perform the row operation to make the entry at a .
解题步骤 1.1.2
化简
解题步骤 1.2
Perform the row operation to make the entry at a .
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解题步骤 1.2.1
Perform the row operation to make the entry at a .
解题步骤 1.2.2
化简
解题步骤 1.3
Multiply each element of by to make the entry at a .
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解题步骤 1.3.1
Multiply each element of by to make the entry at a .
解题步骤 1.3.2
化简
解题步骤 1.4
Perform the row operation to make the entry at a .
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解题步骤 1.4.1
Perform the row operation to make the entry at a .
解题步骤 1.4.2
化简
解题步骤 1.5
Multiply each element of by to make the entry at a .
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解题步骤 1.5.1
Multiply each element of by to make the entry at a .
解题步骤 1.5.2
化简
解题步骤 1.6
Perform the row operation to make the entry at a .
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解题步骤 1.6.1
Perform the row operation to make the entry at a .
解题步骤 1.6.2
化简
解题步骤 1.7
Perform the row operation to make the entry at a .
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解题步骤 1.7.1
Perform the row operation to make the entry at a .
解题步骤 1.7.2
化简
解题步骤 1.8
Perform the row operation to make the entry at a .
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解题步骤 1.8.1
Perform the row operation to make the entry at a .
解题步骤 1.8.2
化简
解题步骤 2
The pivot positions are the locations with the leading in each row. The pivot columns are the columns that have a pivot position.
Pivot Positions: and
Pivot Columns: and