Function: gradient[0](cos(numbers("xxx")) if numbers("xxx") if cos(numbers("xxx")) > numbers('epe') else numbers('xyy') > numbers("xxx") else numbers('xyy') if cos(numbers("xxx")) > cos(numbers("xxx") if cos(numbers("xxx")) > numbers('xyy') else numbers('epe') if numbers('xyy') > cos(numbers("xxx")) else numbers("xxx")) else numbers('epe') if cos(numbers("xxx")) > numbers('xyy') else numbers("xxx"))
