     </li>
        <li>
          Philip Davis,<br>
          Interpolation and Approximation,<br>
          Dover, 1975,<br>
          ISBN: 0-486-62495-1,<br>
          LC: QA221.D33
        </li>
        <li>
          David Kahaner, Cleve Moler, Steven Nash,<br>
          Numerical Methods and Software,<br>
          Prentice Hall, 1989,<br>
          ISBN: 0-13-627258-4,<br>
          LC: TA345.K34.
        </li>
      </ol>
    </p>

    <h3 align = "center">
      Source Code:
    </h3>

    <p>
    