[x]在数学中表示的是什么意思.不大于x的整数。这个是高斯函数，也叫取整函数， [x]是x的整数部分， {x}是x的小数部分。x= [x]+ {x}；例. 知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，.
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