简答题:判断向量组<img src="http://www.weimei168.com/uploads/202208/1612580423661.png" width="20" height="29" />=(1，3，4，-2)<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" />=(3，-1，2，0)<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" />=(4，-3，1，1)<img src="http://www.weimei168.com/uploads/202208/161258043034951.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161258047427451.png" width="24" height="29" />=(2，1，3，-1)<img src="http://www.weimei168.com/uploads/202208/161258043034951.png" width="14" height="25" />是否为<img src="http://www.weimei168.com/uploads/202208/161258048638311.png" width="27" height="25" />的基，若不是，求出<img src="http://www.weimei168.com/uploads/202208/161258048638311.png" width="27" height="25" />的基．