Ever want to simply go beyond 3×3 matrices in the Microsoft Word 2010 Equation Editor?
![Screen shot of Microsoft Word 2010 graphical interface.](http://timothylegg.com/wp-content/uploads/2015/02/Screen-Shot-2015-02-06-at-1.41.29-PM-300x260.png)
It looks like 3×3 is as large as you can go, but you can go ‘under the hood’ to create matrices of arbitrary size by switching between “Linear” and “Professional” modes.
Let’s first create a 3×3 matrix and populate it. It doesn’t have to be 3×3, but for sake of explanation, it makes a clearer example.
![Screen shot of Microsoft Word 2010 graphical interface.](http://timothylegg.com/wp-content/uploads/2015/02/Screen-Shot-2015-02-06-at-1.42.13-PM.png)
Once you have the matrix complete. Click on the black arrow on the lower right-hand corner of the Equation Editor. This pull-down window selects between Professional and Linear modes. Click on Linear.
![Screen shot of Microsoft Word 2010 graphical interface.](http://timothylegg.com/wp-content/uploads/2015/02/Screen-Shot-2015-02-06-at-1.42.24-PM-300x260.png)
You will see your equation editor change the layout of the equations into a textual form. You can think of this as a markup language for the matrix editor.
![Screen shot of Microsoft Word 2010 graphical interface.](http://timothylegg.com/wp-content/uploads/2015/02/Screen-Shot-2015-02-06-at-1.42.56-PM-300x118.png)
The ampersand symbols delimit the columns and the at symbols delimit the rows. If you have an incomplete entry of a row or column, the equation editor will try to make it complete.
![Screen shot of Microsoft Word 2010 graphical interface.](http://timothylegg.com/wp-content/uploads/2015/02/Screen-Shot-2015-02-06-at-1.44.52-PM-300x144.png)
At this point, go back to your menu and switch back to professional to view your new matrix.
![Screen shot of Microsoft Word 2010 graphical interface.](http://timothylegg.com/wp-content/uploads/2015/02/Screen-Shot-2015-02-06-at-1.45.56-PM-300x224.png)
And there you have it. A hand-made 4×4 matrix in Equation Editor for Microsoft Word 2010.