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高数基础_函数的奇偶性
2022-06-25 06:38:00 【ximanni18】
1. 函数的奇偶性,是一个必考内容。
判断奇偶性的前提: 函数的定义域必须关于原点对称。

不是所有函数都有奇偶性, 例如y = x³ + 1 , 它既不关于原点对称, 也不关于y轴对称。
所以函数 按照奇偶性分类,可分为

2. 接下来看一个例题
3. 性质
在f(x),g(x)的公共定义域上:
奇函数±奇函数=奇函数
偶函数±偶函数=偶函数
奇函数×奇函数=偶函数
偶函数×偶函数=偶函数
奇函数×偶函数=奇函数
奇偶函数乘法规律可总结为:同偶异奇
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