rmula_html += "</tr>";
	}
	formula_html += "</table>"; // B
	formula_html += "</td>";
	formula_html += "<td class=\"close_matrix\"></td>";

	formula_html += "</tr></table>";  // A x = B
	formula_html += "<br>P(x) = ";
	for(var i = 0; i < points_for_interpolation.length; ++i) {
		formula_html += "a<sub>" + String(points_for_interpolation.length - i - 1) + "</sub>";
		if(i == points_for_interpolation.length - 1) {
		} else if(i == points_for_interpolation.length - 2) {
			formula_html += "x + ";
		} else {
		