Feature #10077 » Add_Matrix#column_merge_to_NEWS.patch
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by deleting the specified row and column.
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* Matrix#cofactor(row, column) returns the (row, column) cofactor
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which is obtained by multiplying the first minor by (-1)**(row + column).
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* Matrix#column_merge(*matrices) Merge matrices between columns.
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* Method
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* New methods:
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