Function: invert(numbers("yyy") if exp(log(numbers("yyy"), numbers('xyy')), numbers("yyy")) > log(numbers("yyy"), numbers('xyy')) else numbers('xyy')) if invert(log(numbers("yyy"), numbers('xyy')) if numbers("yyy") > numbers('xyy') else exp(log(numbers("yyy"), numbers('xyy')), numbers("yyy"))) if log(numbers("yyy"), numbers('xyy')) > exp(log(numbers("yyy"), numbers('xyy')), numbers("yyy")) else numbers('xyy') if log(numbers("yyy"), numbers('xyy')) > exp(log(numbers("yyy"), numbers('xyy')), numbers("yyy")) else numbers("yyy") > exp(log(numbers("yyy"), numbers('xyy')), numbers("yyy")) else numbers("yyy") if exp(log(numbers("yyy"), numbers('xyy')), numbers("yyy")) > log(numbers("yyy"), numbers('xyy')) else numbers('xyy')