public class Problem3
{
	public static void main(String[] args)
	{
		double c=2, d=1, q=0.2, x=5, y=3;
		double z;

		// (a)
		z = x*x + y*y*y;
		System.out.println("(a)  z = " + z);
		
		// (b)
		z = 1/(1+ 1/c);
		System.out.println("(b)  z = " + z);
		
		// (c)
		z = 5 / (4*(d+50));
		System.out.println("(c)  z = " + z);
		
		// (d)
		z = Math.sqrt(1 - Math.pow(Math.cos(q), 2));
		System.out.println("(d)  z = " + z);
		
		// (e)
		z = Math.abs(x*x*x - 5*x*x +x-3);
		System.out.println("(e)  z = " + z);
	}
}