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对高中数学教材的某些地方的教法上,提出个人的意見如下,不一定恰当,請同志們指正。 (一) 高一代数中的“函数的定义域”所謂函数的定义域,就是在函数的解析表示中,使函数能得实值的自变量的集合。学生理解这个定义,一般是不發生困难的,但要使他们能完善的求出每一給定函数的定义域而不發生錯誤,那就不太容易,原因是学生不会分析求函数定义域的規律,不知道求函数定义域的法則所致。为此,需先使他們知道三种基本的函数定义域的求法:
Regarding the teaching methods in some places of high school mathematics textbooks, the following personal opinions are not necessarily correct. Please ask the comrades to correct them. (1) “Definition domain of functions” in higher generation numbers The so-called definition domain of functions is the set of independent variables that enable functions to have real values in the analytical expression of functions. Students understand this definition, and generally do not have difficulty, but it is not easy to make them able to find the definition of each given function without errors. The reason is that students will not analyze the function definition domain. The law does not know the rules of the function definition domain. To do this, first let them know the three basic function domain definition methods: