extremum of fuzzy functions

例句：

1. 1.The scientist found the extremum of the curve at point A.
   科学家在A点找到了曲线的极值。
2. 2.The team achieved its extremum in performance during the final match.
   队伍在最后一场比赛中达到了最佳表现。
3. 3. The researcher discovered the extremum of the function at x = 0.5.
   研究者在x=0.5处发现了函数的极值。