简答题:求R<img src="http://www.weimei168.com/uploads/202208/161258052934701.png" width="12" height="25" />中由向量组<img src="http://www.weimei168.com/uploads/202208/161258053485221.png" width="20" height="29" />=(2，0，1)<img src="http://www.weimei168.com/uploads/202208/161258043034951.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161258010087261.png" width="24" height="29" />=(1，1，1)<img src="http://www.weimei168.com/uploads/202208/161258043034951.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161258032591021.png" width="22" height="30" />=(1，2，3)<img src="http://www.weimei168.com/uploads/202208/161258043034951.png" width="14" height="25" />生成的子空间V的基和维数．