// Page 032

import java.text.DecimalFormat;
class Prog_3_3
{
	public static void main(String[] args)
	{

			DecimalFormat f2 = new DecimalFormat("0.00");
			double x = Math.log(2);
			System.out.println("ln2 = " + f2.format(x) + "\n\n");


	}
}