Casio FX-9750G PLUS User's Manual & Technical Reference page 114

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Matrix Cell Operations
u u u u u To add a row
k k k k k Column Operations
The following menu appears whenever you press 3 (COL) while a recalled
matrix is on the display.
u u u u u To delete a column
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Example To add a new row below row 3 of the following matrix :
Matrix A =
2(ROW)cc
3(ADD)
• {DEL} ... {delete column}
• {INS} ... {insert column}
• {ADD} ... {add column}
Example To delete column 2 of the following matrix :
Matrix A =
3(COL)e
1(DEL)
1 2
3 4
5 6
1 2
3 4
5 6