% t NAMES
% t displays the matrix NAMES menu, which shows the dimensions of the
matrices and lets you use them in calculations. The row and column dimension of a
matrix can be 1{row{3 and 1{column{3.
1:[A] Definable matrix [A].
2:[B] Definable matrix [B].
3:[C] Definable matrix [C].
4:[Ans] Last matrix result ([Ans]=row×column), or
last vector result ([Ans] dim=n).
Not editable.
Note: Cell values can be toggled. To view the full
precision or exact format, highlight the cell.
5:[I2] 2×2 identity matrix (not editable).
6:[I3] 3×3 identity matrix (not editable).
% t MATH
% t " displays the matrix MATH menu, which lets you perform the following
operations:
1:Determinant Determinant of a square matrix.
Syntax: det(squarematrix)
2:T Transpose Transpose of a matrix.
Syntax: matrixT
3:Inverse Inverse of a square matrix.
Syntax: squarematrix
–1
4:ref reduced Row echelon form.
Syntax: ref(matrix)
5:rref reduced Reduced row echelon form.
Syntax: rref(matrix)
% t EDIT
% t ! displays the matrix EDIT menu, which lets you define or edit matrix [A],
[B], or [C].
Note: Press r to toggle the number format in a cell as needed.
Example
Define matrix [A] =
Calculate the determinant, transpose, inverse, and rref of [A].
Math Tools 51
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