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①如果f(x)是奇(或偶)函数,则有f(-x)=-f(x)(或f(-x)=f(x)). ②若0属于奇函数f(x)的定义域,则f(0)=0. ③奇函数的图像关于原点对称,偶函数的图像关于y轴对称. ④定义域关于原点对称的函数f(x)都可以表示为一个奇函数
1 If f(x) is an odd (or even) function, then there is f(-x)=-f(x) (or f(-x)=f(x)). 2 if 0 belongs to an odd function f(x) The definition of domain ,f(0)=0. 3 The image of the odd function is symmetric about the origin, and the image of the even function is symmetric about the y axis. 4 Definition domain The function f(x) symmetric about the origin can be expressed as an odd function.