Function: divide(exp(square(minus(numbers('xry'), numbers('xyy')) if numbers('xyy') > numbers('xry') else numbers("yyy")), numbers("yyy") if numbers('xyy') > minus(numbers('xry'), numbers('xyy')) else numbers('xry')), square(minus(numbers('xry'), numbers('xyy')) if numbers('xry') > numbers("yyy") else numbers('xyy')))