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Calculator User Manual

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Chapter 10: Matrices 231
[matrix](row,column)
Using Math Functions with Matrices
Using Math Functions with MatricesUsing Math Functions with Matrices
Using Math Functions with Matrices
Using Math Functions with Matrices
Using Math Functions with MatricesUsing Math Functions with Matrices
Using Math Functions with Matrices
You can use many of the math functions on the TI-84 Plus 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.
Addition, Subtraction,
Addition, Subtraction, Addition, Subtraction,
Addition, Subtraction, Multiplication
MultiplicationMultiplication
Multiplication
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.