lǎo / shī / ràng / wǒ / men / pàn / duàn / zhè / tiáo / qū / xiàn / de / jí / zhí / bìng / shuō / míng / tā / men / fēn / bié / shì / zuì / dà / zhí / hái / shì / zuì / xiǎo / zhí

老师让我们判断这条曲线的极值，并说明它们分别是最大值还是最小值。

The teacher asked us to identify the extrema of this curve and explain which are maximums and which are minimums.