论文部分内容阅读
函数的单调性与奇偶性是高中数学的一个重要知识点,很多学生在解这类题目时总是感觉比较棘手,往往感觉会做却又做不对,或者分数拿不全.而神秘的抽象函数,因为没有明确的函数表达式,只有一些特殊的关系式,学生解题时更是困难重重.下面我们来看两类典型的单调性与奇偶性例题,希望能让大家有所收获.一、已知奇偶性,求解析式例1函数f(x)在R上为奇函数,且当x>0时,f(x)=
The monotony and parity of the function is an important point of knowledge in high school mathematics, many students always feel more difficult to solve such problems, often do not feel right or wrong, or the score is not complete.And the mysterious abstract function, Because there is no clear function expression, only a few special relations, the problem is even more difficult for students to solve. Here we look at two typical examples of monotony and parity, I hope we can make some gains. Knowing the Parity, Solving Example 1 The function f (x) is an odd function on R, and when x> 0, f (x) =