Using Math Functions With Matrices - Texas Instruments TI-83 Manual Book

Using Math Functions with Matrices

Using Math
Functions with
Matrices
+ (Add), –
(Subtract), ä
(Multiply)
L (Negation)
You can use many of the math functions on the TI-83
keyboard, the
MATH
menu with matrices. However, the dimensions
MATH TEST
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
+
matrixA N matrixB
To multiply (¯) two matrices together, the column
dimension of matrixA must match the row dimension of
matrixB.
matrixA ä matrixB
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.
matrix ä value
value ä matrix
Negating a matrix (Ì) returns a matrix in which the sign
of every element is changed (reversed).
L matrix
menu, the
MATH NUM
menu, and the
Matrices 10-9