public static double exponent(Object left,Object right) throws PageException {
  return StrictMath.pow(Caster.toDoubleValue(left),Caster.toDoubleValue(right));
}

public static double exponent ( Object left , Object right ) throws PageException { return StrictMath . pow ( Caster . toDoubleValue ( left ) , Caster . toDoubleValue ( right ) ) ; }
calculate the exponent of the left value
