a1=2 a2=2+4 a3=2+4+6...a/1+a/2+a/3+...+a/99+a/100=?
设a1,a2,a3均为3维列向量,矩阵A=(a1,a2,a3)并且|A|=1,B=(a1+a2+a3,a1+2a2+4a
记集合A={1,2,3,4,5,6},M={m|m=a1/10+a2/100+a3/1000,a1,a2,a3∈A},将
设矩阵A=(a1,a2,a3)行列式A= -2求行列式a3-2a1,3a2,a1
设三阶方阵A=(A1,A2,A3),且|A|=3,则|A1-A2,A3,2A1|=______
设a1,a2,a3线性无关,b1=a1+2*a2,b2=2*a2+a*a3,b3=3*a3+2*a1,且线性相关,求a
已知向量组a1,a2,a3,a4,A=(a1,a2,a3),B=(a2,a3,a4,R(A)=2,R(B)=3,证明a1
设A为3*3列矩阵,且|A|=1,把A按列分块为A=(A1,A2,A3),求|A3,4A1,-2A2-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,a5),a1,a3,a5线性无关,a2=3a1-a3-a5,a4=2a1+a3+6a5,
设a1,a2,a3,a4是4维列向量,矩阵A=(a1,a2,a3,a4),如果|A|=2,则|-2A|=()
设4阶方阵A=(a1,a2,a3,a4),B=(B1,a2,a3,a4),且|A|=1,|B|=2,则|A+B|=
设a1,a2,a3均为3维列向量,记矩阵A=(a1,a2,a3)B=(a1+a2+a3,a1+2a2+2a3,a1+3a