1.求下列向量组的秩,并求一个极大无关组:-|||-(1) _(1)=([ 1,3,2] )^T _(2)=([ -2,-1,1] )^T, _(3)=([ 3,5,2] )^T;-|||-(2) _(1)=([ 1,0,2,1] )^T, _(2)=([ 1,2,0,1] )^T _(3)=([ 2,1,3,2] )^T , _(4)=([ 2,5,-1,4] )^T.