An n × m matrix, when multiplied by an m × n matrix, yields
A)an n × m matrix.
B)an m × n matrix.
C)an n × n matrix.
D)an n × m × n matrix.

Question

Quizplus · Accepted Answer

When an n × m matrix is multiplied by an m × n matrix, the result is an n × n matrix, because the inner dimensions (m) cancel out, leaving the outer dimensions (n × n) as the size of the resulting matrix.

An N × M Matrix, When Multiplied by an M