<p>设随机变量X的分布函数为<img max-width="300" src="https://learnfile.20230611.cn/learnAppQuestion/b6/00/b600d67d5274d5708269f198054073a8.jpg" style="width: 100%;height: auto;"><img max-width="300" src="https://learnfile.20230611.cn/learnAppQuestion/10/94/10940