Matrices 10-9
8310MTRX.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:35 PM Printed: 02/19/01 1:36
PM Page 9 of 16
You can use many of the math functions on the TI-83
keyboard, the MATH menu, the MATH NUM menu, and the
MATH TEST menu with matrices. However, the dimensions
must be appropriate. Each of the functions below creates a
new matrix; the original matrix remains the same.
To add (Ã) or subtract (¹) matrices, the dimensions must
be the same. The answer is a matrix in which the elements
are the sum or difference of the individual corresponding
elements.
matrixA+matrixB
matrixANmatrixB
To multiply (¯) two matrices together, the column
dimension of matrixA must match the row dimension of
matrixB.
matrixAämatrixB
Multiplying a matrix by a value or a value by a matrix
returns a matrix in which each element of matrix is
multiplied by value.
matrixävalue
valueämatrix
Negating a matrix (Ì) returns a matrix in which the sign
of every element is changed (reversed).
Lmatrix
Using Math Functions with Matrices
Using Math
Functions with
Matrices
+ (Add), –
(Subtract), ä
(Multiply)
L (Negation)