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 Documentation / Mathematica / Other Information / 2D Expression Input / Entering 2D Expressions  /

Matrices

How to create a new matrix

Choose Create Table/Matrix/Palette from the Input menu.

How to fill in placeholders

Suppose the entry in the top-left position is selected.

Type an entry and select the next placeholder with the Tab key; repeat. (You can select placeholders in the opposite direction with Shift-Tab.)

Type a, press c

Type b, press

Type c, press

Press the Control key and the Space bar at the same time to get out of the matrix.

Type d, press

How to add a new column

Place the insertion point to the right of any entry; here the insertion point is to the right of the entry at the top-left.

Press the Control and Comma keys at the same time. A column of placeholders will appear, with the top one selected.

Press ,

How to add a new row

Place the insertion point to the right of any entry; here the insertion point is to the right of the entry at the top-left.

Press the Control and Return keys at the same time. A row of placeholders will appear, with the first one selected.

Press ↵