Danilest
2020-10-24T07:51:37+00:00
答案上这样写的，这等效变换是不是有问题啊
[img]https://img.nga.178.com/attachments/mon_202010/27/-7Q5-kpedZ24T3cSqo-zk.jpg.medium.jpg[/img]
编辑一下，题目是这个，三题
[img]https://img.nga.178.com/attachments/mon_202010/27/-7Q5-eoleXcZ3dT3cSqo-zk.jpg.medium.jpg[/img]
[img]https://img.nga.178.com/attachments/mon_202010/27/-7Q5-kpedZ24T3cSqo-zk.jpg.medium.jpg[/img]
编辑一下，题目是这个，三题
[img]https://img.nga.178.com/attachments/mon_202010/27/-7Q5-eoleXcZ3dT3cSqo-zk.jpg.medium.jpg[/img]