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EXCEL MMULT FUNCTION
Excel MMULT Function Introduction
The MMULT function in Excel computes the matrix product of two arrays (representing matrices).
Description of Excel MMULT Function
Syntax :
=MMULT( A1:D3, F1:G4 )
Parameters :
Array1 and array2 are numeric value arrays representing matrices, with the number of columns in array1 equal to the number of rows in array2. The resultant matrix has the same number of rows and columns as array1 and array2.
Step By Step Guide of MMULT Function
Example :
The formula =MMULT, the 3×4 matrix in cells A1-D3 is multiplied by the 4×2 matrix in cells F1-G4 ( A1:D3, F1:G4 ) Cells I1-J3 display the resultant 3×2 matrix.
Key Points
- #VALUE! – Occurs if any of the following conditions are met: one of the given arrays includes a blank or a non-numeric value; the number of columns in array1 does not equal the number of rows in array2.
- #N/A – Occurs in cells that are not within the range of the resultant matrix.
For example, if we highlighted cells I1-J4 before entering the Mmult function in the above example, the ‘extra’ cells, I4 and J4, are not included in the resultant matrix. As a result, these cells will show the #N/A error.
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