每年的数学中考多以有关函数的题为压轴题,通过此题来有效检验同学们的计算能力、观察能力、综合运用知识的能力以及数形结合和转化的数学思想。近年来,分类思维也逐渐突出,通过答题情况看,总体不够理想,一方面,所具备的综合知识、基本能力、数学思想不够;另一方面,同学们对此类题所具备的解 Every year, the math test takes the related function as the finale, which effectively tests the students’ ability of calculation, observation ability, the ability to use knowledge comprehensively and the math idea of ​​number combining and transformation. In recent years, the classification of thinking has gradually become prominent, through the answer to the situation, the overall not ideal, on the one hand, with the comprehensive knowledge, basic ability, mathematical thinking is not enough; the other hand, students have such solutions