convert a banded symmetric matrix to a sparse matrix
convert a banded symmetric matrix to a sparse matrix
the Laplace equation on the unit square is discretized
solve A*x=lambda*B*x
convert a banded symmetric matrix to a sparse matrix
using backsubstitution to return the solution of a system of linear equations
find a few eigenvalues of the symmetric, banded matrix
find the R'DR factorization of a symmetric banded matrix
find the R'DR factorization of a symmetric banded matrix
multiplies a symmetric banded matrix with a matrix
solve a system of linear equations with a symmetric banded matrix
compute the errors using the gap test
