填空题:<img src="http://www.weimei168.com/uploads/202208/161257973386381.png" width="27" height="25" />中向量β=(3，0，0)在基<img src="http://www.weimei168.com/uploads/202208/161257973961011.png" width="20" height="29" />=(-1，1，0)，<img src="http://www.weimei168.com/uploads/202208/16125797441911.png" width="24" height="29" />=(0，0，1)，<img src="http://www.weimei168.com/uploads/202208/161257974982711.png" width="22" height="30" />=(0，-1，0)下的坐标为 _______．