填空题:已知向量组<img src="http://www.weimei168.com/uploads/202208/161267135179271.png" width="20" height="29" />=(1，1，3)<img src="http://www.weimei168.com/uploads/202208/161267135678491.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/16126713653471.png" width="24" height="29" />=(1，2，0)<img src="http://www.weimei168.com/uploads/202208/161267135678491.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161267137160611.png" width="22" height="30" />=(1，0，0)<img src="http://www.weimei168.com/uploads/202208/161267135678491.png" width="14" height="25" />是R<img src="http://www.weimei168.com/uploads/202208/161267137761861.png" width="12" height="30" />的一组基，则向量β=(2，0，6)<img src="http://www.weimei168.com/uploads/202208/161267138630421.png" width="14" height="25" />在这组基下的坐标为_____．