Multiply two matrices. Enter both with rows separated by semicolons and values by commas.
Product
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Matrix A times B.Usage Tip
Order matters in matrix multiplication — AB and BA are generally different, and one may not even be defined.
THE MATH
each result entry = dot product of an A row with a B column
A’s column count must equal B’s row count
A’s column count must equal B’s row count
Matrix multiplication combines two matrices by taking dot products of rows and columns.
It is not commutative: A times B usually differs from B times A.
It is not commutative: A times B usually differs from B times A.
The columns of A must equal the rows of B.
The result has A’s row count and B’s column count.
Enter rows separated by semicolons, values by commas.
The result has A’s row count and B’s column count.
Enter rows separated by semicolons, values by commas.