Matrices

Click on the Matrix button in the Math Panel. The dialog has two sliding bars which allow you to choose how many rows and columns you want in your matrix. Choose 2 rows and 3 columns and hit Apply or OK. LYX prints 6 insertion points in a 2×3 matrix. As usual, you can put any sort of Mathed expression (a square root, another matrix, etc.) in each insertion point. You can also leave some of the insertion points empty if you want.

Tab can be used to move horizontally between the columns of a matrix. Alternatively, you can use the arrow keys to move around - hitting Right at the end of one box will move to the next box, Down will move to the next row, etc.

If you suddenly need more rows or columns, use Edit $\triangleright$Math $\triangleright$Add Row and Add Column. They add a row or column just after the current position. Overdid it? Use Delete Row and Delete Column from the same menu.

See the User's Guide for information on how to change the horizontal alignment of each column, and how to change the vertical position of the whole matrix. Note that if you want to write a table containing text, you should use LYX' wonderful table support, rather than trying to write text in a matrix.