public class BasicCalculatorSolution 
{
  
  /**
   * Adds two parameters, x and y. 
   * @return x+y
   */
  public double add (double x, double y)
  {
    return x+y;
  }
  
  /**
   * Subtracts two parameters, x and y. 
   * @return x-y
   */
  public double subtract (double x, double y)
  {
    return x-y;
  }
  
  /**
   * Multiplies two parameters, x and y. 
   * @return x*y
   */
  public double multiply (double x, double y)
  {
    return x*y;
  }
  
  /**
   * Divides two parameters, x and y. 
   * @return x/y
   */
  public double divide (double x, double y)
  {
    return x/y;
  }
  
  /**
   * Raises base to the power of exponent. 
   * @return (base)^exponent
   */
  public double power (double base, double exponent)
  {
    return Math.pow(base,exponent);
  }
  
}