向量组a1=(2,1,3,-1)a2=(3,-1,2,0)a3=(4,2,6,-2)a4=(4,-3,1,1)求秩(a2

向量组（1)a1,a2,a3(2)a1,a2,a3,a4(3)a1,a2,a3,a5 R(1)=R(2)=3,R(3)= 已知整数a1，a2，a3，a4，…满足下列条件：a1=0，a2=-|a1+1|，a3=-|a2+2|，a4=-|a3+3 三个正整数a1,a2,a3,且a1+a2+a3=a1×a2×a3,a1≥1,a2≥2,a3≥3,求a1,a2,） 设A=(a1,a2,a3,a4),ai(i=1,2,3,4)为5维向量,若a2,a3,a4线性无关,且a4=a1+2a2 求向量组a1=(1,-1,2,4),a2=(0,3,1,2),a3=(1,8,5,10),a4=(2,-5,3,6),a 已知a1+a2=1,a2+a3=2,a3+a4=3,...,a99+a100=99,a100+a1=100求a1+a2+ a1=[1 2 3],求非零向量a2,a3,使a1,a2,a3为正交向量组 在P^4中,求向量b在基a1,a2,a3,a4下的坐标.设,a1=(1,1,0,1),a2=(2,1,3,1),a3=( 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A=(a1,a2,a3,a4),ai(i=1,2,3,4)为5维列向量,若a2,a3,a4线性无关,且a4=a1+2a 求向量组a1=(2,1,4,3),a2=(-1,1,-6,6),a3=(-1,-2,2,-9),a4=(1,1,-2,7 求向量组a1=(1,2,1,3),a2=(4,-1,-5,-6),a3=(1,-3,-4,-7),a4=(3,6,3,9