eads a prefix defining three finite element data files,
      reads the data, samples the finite element function, and displays
      a plot.
    </p>

    <p>
      <a href = "../../m_src/fem1d_lagrange/fem1d_lagrange.html">
      FEM1D_LAGRANGE</a>,
      a MATLAB library which
      sets up the matrices and vectors associated with the finite element
      method (FEM) solution of a boundary value problem (BVP) -u''+u=f(x), 
      using Lagrange basis polynomials.
    </p>

    <p>
      <a href = "../../