设<img src="https://static.zxtiku.com/wangke/imgs/topic/f296ea8c907c934fc4d9f440a6cef327.jpg"/>为线性空间<img src="https://static.zxtiku.com/wangke/imgs/topic/dd318e6f52ce776ae7ccc9e0efe8c069.jpg"/>的基，<img src="https://static.zxtiku.com/wangke/imgs/topic/a4734fec79ef45cba4754a7b88f92c66.jpg"/>的线性变换<img src="https://static.zxtiku.com/wangke/imgs/topic/7e48892f029d0730487d63e86aee3584.jpg"/>在此基下的矩阵为<img src="https://static.zxtiku.com/wangke/imgs/topic/d94088461339dd1c5fc8c05335530468.jpg"/>，则<img src="https://static.zxtiku.com/wangke/imgs/topic/4c3510d615fb22290f50ea4aa7e5fda5.jpg"/>的基为（）