Function: invert(logn(minus(numbers('xyy') if numbers('yyx') if numbers("yyy") > numbers('xyy') else numbers("yxx") > cos(numbers('yyx') if numbers("yxx") > numbers('xyy') else numbers("yyy")) else numbers("yyy"), cos(numbers("yyy") if numbers('xyy') > numbers("yxx") else numbers('yyx')))))