shù / xué / kè / shàng / lǎo / shī / jiǎng / jiě / le / rú / hé / lì / yòng / dì / tuī / gōng / shì / qiú / shù / liè / de / tōng / xiàng

数学课上，老师讲解了如何利用递推公式求数列的通项。

In math class, the teacher explained how to use a recurrence formula to find the general term of a sequence.