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二次函数的应用是中考的高频考点,主要涉及二次函数最值的应用和建立抛物线模型解决实际问题的应用.下面以2015年中考题为例,谈谈这类问题的解法.一、利用二次函数求最大利润例1(2015年南京卷)某企业生产并销售某种产品,假设销售量与产量相等,图1中的折线ABD、线段CD分别表示该产品每千克生产成本y_1(单位:元)、销售价y_2(单位:元)与产量x(单
The application of the quadratic function is the high frequency test center of the senior high school entrance examination, which mainly involves the application of the quadratic function and the establishment of a parabola model to solve the practical problems.The following takes the middle school entrance examination in 2015 as an example to talk about the solution of such problems: Using the quadratic function to find the maximum profit Example 1 (Nanjing 2015) An enterprise produces and sells a certain product, assuming that the sales volume is equal to the output. The broken line ABD and line CD in Figure 1 respectively represent the production cost per kg of the product y_1 Unit: yuan), sales price y_2 (unit: yuan) and output x (single