Function: gradient[0](logn(log(numbers("yyy"), numbers('xry')))) if logn(log(numbers("yyy"), numbers('xry'))) > log(numbers("yyy"), numbers('xry')) if numbers("yyy") > gradient[0](logn(log(numbers("yyy"), numbers('xry')))) else logn(log(numbers("yyy"), numbers('xry'))) else log(numbers("yyy"), numbers('xry'))
