Right Arrow - Scrolls the spreadsheet to the right.
Fill - Fills in zero entries for the blanks
contained in the largest matrix determined by the nonzero
entries.
Up Arrow - Scrolls the spreadsheet up.
Down Arrow - Scrolls the spreadsheet down.
Clear - Clears the spreadsheet.
Go - Performs the request to the left of the
button.
Save As - Saves the matrix in the current
spreadsheet after calling "Fill" (as described above). An
error message will show if the matrix does not contain legal
entries.
Display - Displays the selected matrix in the
spreadsheet.
Inverse - Computes the inverse of the selected
matrix (if it is nonsingular).
RREF - Computes the row reduced Echelon form of
the selected matrix.
Det - Computes the determinant of the selected
matrix.
Trace - Computes the sum of the diagonal entries
of a nonempty matrix.
Transpose - Computes the transpose of the
selected matrix.
EigVals - Computes the eigen values of the
selected matrix and writes them in the log shown in the
lower text area. Note that
matrices with rational entries can have irrational eigen values.
EigVects - Computes the eigen values and the
corresponding eigenvectors of the selected matrix, and writes
the output to the log shown in the lower text area. The eigen values are listed first,
followed by the eigenvector matrix. If the i-th eigen value is
real, the i-th COLUMN of the eigenvector Matrix contains the
corresponding eigenvector. If the i-th eigen value is complex
with positive imaginary part, COLUMNS i and (i + 1) contain the
real and imaginary parts of the corresponding eigenvector. The
conjugate of this vector is the eigenvector for the conjugate
eigen value. Note that matrices with rational entries can have
irrational eigen values and eigen vectors.
Charpoly - Computes the characteristic polynomial of
the selected matrix. If the matrix is M, then charpoly
returns det (M - z I).
RangeSpace - Returns a basis for the range space of
the selected matrix by returning a matrix whose columns form a
basis for the range space. If the selected matrix is the zero
matrix, then the range space is trivial (only contains the zero vector).
NullSpace - Returns a basis for the null space of the
selected matrix by returning a matrix whose columns form a basis
for the null space. If the selected matrix is full rank, then
the null space is trivial (only contains the zero vector).
Random m x n - Creates a random m by n matrix with
integer values between -10 and 10.
Nice Random m x n - Creates an m by n matrix from the
principle block of a square matrix with determinant 1 or -1 by
creating a lower triangular matrix L with determinant +-1 and
integer entries between -4 and 4, and an upper triangular matrix
U with determinant +-1 and integer entries between -4 and 4, and
then forming the product LU.
Multiplying a Scalar Times a Row - Multiplies the
given scalar value by the selected row. The scalar must be a
rational number.
Matrix Algebra - Combinations of matrices and the
identity matrix can be computed using +, -, *, \, and
augment provided the matrices are of appropriate size.
Row Swap - The selected rows will be
interchanged.
Row Operations - A scalar times a row can be
added to a scalar times another row and put in the position
of the second row.
Add Comment - Adds a comment to the activity log
shown in the lower text area.
Delete Row/Column - Deletes the selected row or
column from the spreadsheet.
Clear Log - Clears the log of activity that is
displayed in the lower text area.