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《义务教育数学课程标准(2011年版)》对函数教学目标的界定之一:能结合图象对简单实际问题中的函数关系进行分析.中考命题可选择的实际问题的背景是多样的,其中生活中我们遇到的向容器中注水的情形,此过程常会形成一种时间与水位高度之间的函数关系,一般而言,当容器的形状是圆柱形或长方体(也就是容器的截面积相等)时,两个变量之间是一次函数关系,怎样解决相关的问题呢?
“Compulsory education mathematics curriculum standards (2011 Edition)” on the definition of the function of teaching one of the objectives: the image can be combined with simple practical problems in the analysis of the relationship between the function of the senior high school entrance examination candidates practical background of choice is diverse, including life In the case of water filling the container we encounter, this process often forms a function of time as a function of the height of the water level. In general, when the shape of the container is cylindrical or cuboid (ie, the cross-sectional area of the container is equal) When the two variables is a functional relationship, how to solve the related problems?