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Quick Refresher

Matrix Demonstration

Intuition

  • ​: The element in the i-th row and j-th column of the result matrix C.
  • ​: The element in the i-th row and k-th column of A.
  • ​: The element in the k-th row and j-th column of B.
Widths and Heights
  • i: Corresponds to the height of A (its rows) and is used to determine the rows of C.
  • j: Corresponds to the width of B (its columns) and is used to determine the columns of C.
  • k: Corresponds to the width of A (or the height of B), which must be the same for multiplication to be defined.