视频地址:https://video.cache.bdschool.cn/vd/7f9f8b93bb9e75bd6b1b5f92688b0a27.mp4
附件:2015WKSXBX024均值不等式的导入与证明.docx
附件:2015WKSXBX024均值不等式的导入与证明.pptx