HP 49g Typing in the matrix directly into the stack

Press `once more to place the matrix on the stack. The ALG mode stack is shown next, before and after pressing , once more:

If you have selected the textbook display option (using H@)DISP! and checking off ￿Textbook), the matrix will look like the one shown above. Otherwise, the display will show:

The display in RPN mode will look very similar to these.

Typing in the matrix directly into the stack

The same result as above can be achieved by entering the following directly into the stack:

„Ô

„Ô 2.5\‚í4.2‚í2™ ‚í „Ô .3‚í1.9‚í2.8™ ‚í

„Ô 2‚í.1\‚í.5

Thus, to enter a matrix directly into the stack open a set of brackets („Ô) and enclose each row of the matrix with an additional set of brackets („Ô). Commas (‚í.) should separate the elements of each row, as well as the brackets between rows.

For future exercises, let’s save this matrix under the name A. In ALG mode use K~a. In RPN mode, use ³~aK.

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