MMULT

See Also

Returns the matrix product of two arrays. The result is an array with the same number of rows as array1 and the same number of columns as array2.

Syntax

MMULT(array1,array2)

Array1, array2   are the arrays you want to multiply.

Remarks

Example 1

The example may be easier to understand if you copy it to a blank spreadsheet.

How?

  1. Create a blank spreadsheet.
  2. Select the example in the Help topic.

    Selecting example from Help

    Selecting an example from Help

  3. Press CTRL+C.
  4. In the spreadsheet, select cell A1, and press CTRL+V.
  5. To switch between viewing the formula that returns the result and the result in the cell, select the cell and press F2 and then ENTER, or click Commands and Options on the spreadsheet toolbar, click the Formula tab, and look in the Formula in active cell (active cell) box.
 
Array 1 Array 1
1 3
7 2
Array 2 Array 2
2 0
0 2
Formula Formula
=MMULT(A2:B3,A5:B6)  
   

Note   The formula in the example must be entered as an array formula. After copying the example to a blank spreadsheet, select the range A8:B9 starting with the formula cell. Press F2, and then press CTRL+SHIFT+ENTER. If the formula is not entered as an array formula, the single result is 2.

Example 2

The example may be easier to understand if you copy it to a blank spreadsheet.

How?

  1. Create a blank spreadsheet.
  2. Select the example in the Help topic.

    Selecting example from Help

    Selecting an example from Help

  3. Press CTRL+C.
  4. In the spreadsheet, select cell A1, and press CTRL+V.
  5. To switch between viewing the formula that returns the result and the result in the cell, select the cell and press F2 and then ENTER, or click Commands and Options on the spreadsheet toolbar, click the Formula tab, and look in the Formula in active cell (active cell) box.
 
Array 1 Array 1
3 0
2 0
Array 2 Array 2
2 0
0 2
Formula Formula
=MMULT(A2:B3,A5:B6)  
   

Note   The formula in the example must be entered as an array formula. After copying the example to a blank spreadsheet, select the range A8:B9 starting with the formula cell. Press F2, and then press CTRL+SHIFT+ENTER. If the formula is not entered as an array formula, the single result is 6.