设向量组有a1=(14,6,7,35),a2=(12,104,6,30),a3(6,21,3,15),a4=(8,9,4

设向量组有a1=(14,6,7,35),a2=(12,104,6,30),a3(6,21,3,15),a4=(8,9,4 设A=(a1,a2,a3,a4,a5),a1,a3,a5线性无关,a2=3a1-a3-a5,a4=2a1+a3+6a5, 设向量 组a1=(1,2,1,3),a2=(4,-1,-5,-6),a3=(1,-3,-4,-7),a4=(2,1,-1 设矩阵A=[a1.a2.a3.a4],其中a2.a3.a4线性无关,a1=2a3-3a4.向量b=a1+2a2+3a3+ 设a1,a2,a3,a4是4维向量,且a1可由,a2,a3,a4线性表示,则|a1,a2,a3,a4|= 可利用数列知识求解.设a1=3,a2=6,a3=10,a4=15,.则a2-a1=3,a3-a2=4,a4-a3=5,. 设n维向量组A1 ,A2 ,A3,A4,A5,线性无关,B1=A1+A2,B2=A2+A3,B3=A3+A4,B4=A4 设矩阵A=(a1,a2,a3,a4),其中a2,a3,a4线性无关,a1=2a2-a3,向量b=a1+a2+a3+a4, 设矩阵A=(a1,a2,a3,a4）其中a2,a3,a4线性无关,a1=2a2-a3,向量b=a1+a2+a3+a4,求 求向量组a1=(1,2,1,3),a2=(4,-1,-5,-6),a3=(1,-3,-4,-7),a4=(3,6,3,9 求向量组a1=(2,1,4,3),a2=(-1,1,-6,6),a3=(-1,-2,2,-9),a4=(1,1,-2,7 设向量组b1=a1 b2=a1-a2 b3=a1-a2-a3 b4=a1-a2-a3-a4 且向量组a1a2a3a4线性