Matrizenmultiplikation

A = {{3, 2, 1}, {5, -6, 7}, {2, 3, -4}, {1, 6, 9}, {0, 0, 
          1}}

B = {{5, 6, 7, 8}, {9, 1, -1, 2}, {3, 6, 7, 0}}

A . B

Normalform nach Anwendung elementarer Zeilenoperationen

RowReduce[A]

RowReduce[B]

RowReduce[Transpose[A]]

RowReduce[Transpose[B]]

RowReduce[A . B]