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Displaying matrix elements, rows, and submatrices, Using a matrix in an expression – Texas Instruments TI-86 User Manual

Page 193

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Chapter 13: Matrices

181

13MATRX.DOC TI-86, Chap 13, US English Bob Fedorisko Revised: 02/13/01 2:32 PM Printed: 02/13/01 3:03 PM Page 181 of 10

13MATRX.DOC TI-86, Chap 13, US English Bob Fedorisko Revised: 02/13/01 2:32 PM Printed: 02/13/01 3:03 PM Page 181 of 10

Displaying Matrix Elements, Rows, and Submatrices

To display an existing matrix on the home screen, enter
the matrix name’s individual characters or select it from
the

MATRX

NAMES

menu, and then press b. The full

value of each element is displayed. Elements with very
large values may be expressed exponentially.

To display specific elements of matrixName, the syntax is:

matrixName

(

row

,

column

)

To display a row of matrixName, the syntax is:

matrixName

(

row

)

To display a submatrix of matrixName, the syntax is:

matrixName

(

beginRow

,

beginColumn

,

endRow

,

endColumn

)

Using a Matrix in an Expression

You can enter the matrix directly (for example,

5

¹

[[2,3][3,5]]

).

You can use 1 and - n to enter a matrix name’s individual characters (for
example,

MAT1

¹

3

).

You can select the matrix name from the

MATRX

NAMES

menu (- ‰ &).

You can select the matrix name from the

VARS

MATRX

screen (- w / ').

To view elements beyond the
current screen, use

"

,

#

,

!

, and

$

.

When you execute the
expression, the answer is
displayed as a matrix.