Expect one about a min/max problem, something about Lagrange multipliers, something about the chain rule and something about constrained partial derivatives.

有一个极值问题，也有关于拉格朗日乘数法的，链式法则也会有的,约束条件下偏导数当然不会漏掉。

youdao

The product also boasts a flexible and innovative distribution channel, as Max Life has signed an agreement with a national retail chain, I-SERV, to let policyholders manage their policies at 12, 500 of its stores.

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