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*A tridiagonal is of the form:
*A tridiagonal is of the form:
<math>\begin{vmatrix}
<math>\begin{vmatrix}
a_{11} & a_{12} & 0 & 0 & \cdots & 0 & 0 \\
a_{11} & a_{12} & 0 & 0 & \cdots & \cdots & 0 & 0 \\
a_{21} & a_{22} & a_{23} & \cdots & 0 & 0 \\
a_{21} & a_{22} & a_{23} & \cdots & \cdots & 0 & 0 \\
0 & a_{32} & a_{33} & \ddots & a_{n-2,n-1} & 0 \\
0 & a_{32} & a_{33} & \ddots & a_{n-2,n-1} & 0 \\
\vdots &\ddots & \ddots & \ddots & a_{n-1,n-1} & a_{n-1,n}
\vdots &\ddots & \ddots & \ddots & a_{n-1,n-1} & a_{n-1,n}\\
0 & 0 & \cdots &\cdots & a_{n,n-1} & a_{nn}
0 & 0 & \cdots &\cdots & a_{n,n-1} & a_{nn}\\
\end{vmatrix}</math>
\end{vmatrix}</math>
*A general tridiagonal matrix is not necessarily symmetric or Hermitian,but tridiagonal matrix is a matrix that is both upper and lower Hessenberg matrix.
*A general tridiagonal matrix is not necessarily symmetric or Hermitian,but tridiagonal matrix is a matrix that is both upper and lower Hessenberg matrix.
*In Calci, MATRIX("tridiagonal") gives the tridiagonal matirx of order 3.
*In Calci, MATRIX("tridiagonal") gives the tridiagonal matirx of order 3.
*Users can change the order of the matrix.
*Users can change the order of the matrix.