Function: product(mod(gradient[0](tan(numbers('ryy'))), tan(numbers('ryy'))), gradient[0](tan(numbers('ryy')))) if mod(gradient[0](tan(numbers('ryy'))), tan(numbers('ryy'))) > gradient[0](tan(numbers('ryy'))) else log(product(mod(gradient[0](tan(numbers('ryy'))), tan(numbers('ryy'))), gradient[0](tan(numbers('ryy')))), mod(gradient[0](tan(numbers('ryy'))), tan(numbers('ryy'))))
