• 2022-06-03
    设向量组S={a1,a2,a3}线性无关,下列向量组中,与S等价的有()。①a1-a3,a2-a3②a1,a1+a2,a1+a2+a3③a1-a3,a1+a3,2a1,3a3④a1-a3,a1+a3,2a2,3a3
    A: 1
    B: 2
    C: 3
    D: 4