Sharp EL-9900 User Manual

Using [ ] menus, you can manually enter a matrix on the calculation screen.

1. Press 

@ m E 1 ( [ ) at the beginning of the

matrix.

2. Press 

@ m 1 ( [ ) to indicate the beginning of the

first row.

Once you enter the manual matrix entry mode, you can

directly enter “or” by selecting 

1 or 2.

3. Enter a number or expression for each element. Separate

each element with commas.

4. Press 

@ m 2

( ] ) to indicate the end of the

first row.

5. Repeat above steps 2 to 4 to enter all the rows.

6. Press 

@ m 2 ( ] ) to indicate the end of the

matrix.

7. Press 

E.

The matrix will be displayed.

To use a matrix in an expression, you can do any of the follow-

ings:

• Select a matrix from the 

m NAME menu.

• Enter the matrix directly using the [ ] function menus.