The optimal value problems seen in real life such as price, benefits and area measurement can be solved with quadratic function easily.
实际问题中的最值问题，常见的有价格和利润的最值问题和面积最值问题，用二次函数模型就能迎刃而解。
The optimal value problems seen in real life such as price, benefits and area measurement can be solved with quadratic function easily.
实际问题中的最值问题，常见的有价格和利润的最值问题和面积最值问题，用二次函数模型就能迎刃而解。
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