对于定义在R上的函数 ,有下列命题: (1)若是奇函数,则图象关

对于定义在R上的函数 ,有下列命题:

1)若是奇函数,则图象关于点A10)对称

2)若对,有,则 的图象关于直线对称

3)若函数的图象关于直线对称,则为偶函数

4)函数与函数的图象关于直线对称

其中正确命题的序号是                       .

答案

①③

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