Function: mean(minus(sin(invert(numbers('xyy'))), invert(numbers('xyy'))) if sin(invert(numbers('xyy'))) > invert(numbers('xyy')) else invert(numbers('xyy')) if sin(invert(numbers('xyy'))) > numbers('xyy') else minus(sin(invert(numbers('xyy'))), invert(numbers('xyy'))), numbers('xyy') if sin(invert(numbers('xyy'))) > invert(numbers('xyy')) else minus(sin(invert(numbers('xyy'))), invert(numbers('xyy'))))