TRACE | Finds the trace of a square matrix. The trace is equal to the |
| sum of the diagonal elements. (It is also equal to the sum of |
| the eigenvalues.) |
| TRACE(matrix) |
TRN | Transposes matrix. For a complex matrix, TRN finds the |
| conjugate transpose. |
| TRN(matrix) |
Identity Matrix
Transposing a Matrix
You can create an identity matrix with the IDENMAT function. For example, IDENMAT(2) creates the 2×2 identity matrix [[1,0],[0,1]].
You can also create an identity matrix using the MAKEMAT (make matrix) function. For example, entering MAKEMAT(I≠J,4,4) creates a 4 × 4 matrix showing the numeral 1 for all elements except zeros on the diagonal. The logical operator ≠ returns 0 when I (the row number) and J (the column number) are equal, and returns 1 when they are not equal.
The TRN function swaps the
For example, TRN([[1,2],[3,4]]) creates the matrix [[1,3],[2,4]].
Matrices |