“微信扫一扫”进入题库练习及模拟考试
已知定义域是\({\rm{R}}\)的函数\(f\left ( {x} \right )\)满足：\(\forall x\in \text{R}\)，\(f(4 + x) + f( - x) = 0\)，\(f(1 + x)\)为偶函数，\(f(1) = 1\)，则\(f(2023) = \)___．
参考答案：\( - 1\)
进入考试题库
