Function: abs(numbers("xxr") if gradient[1](minus(numbers('xyy') if numbers("xxy") > numbers('epe') else numbers("xxr"), numbers("xxr"))) > minus(numbers('xyy') if numbers("xxy") > numbers("xxr") else numbers('epe'), numbers("xxr")) else numbers("xxr") if numbers("xxy") > numbers('xyy') else numbers('epe'))
