一个数学问题给出的信息 ,有的较显露 ,称之为信息的显性特征 ;有的较隐蔽 ,含而不露 ,极易被人忽视 ,称为信息的隐性特征 ,它既有暗示作用 ,又有干扰作用 ;解题时 ,常因未能发掘其隐性特征而陷入困境或造成失误。因此 ,认真读题 ,细心揣摩 ,发掘其隐性代数特征 (如函数性质、 Some of the information given by a mathematics problem is more revealing, which is called the explicit characteristic of the information; some are hidden, hidden, and easily overlooked. It is called the hidden feature of information. It has both hints. The role, but also the role of interference; problem solving, often due to fail to explore its hidden features and get into trouble or cause errors. Therefore, carefully read the questions and try to figure out their hidden algebraic features (eg, the nature of the function,