Let A be a matrix of 3x3 and x a column vector of three lines. When can you say that the set of three equations Ax = 0.Do you have at least one non-trivial solution? Establish your answer both using the concept of determinant and linear independence设A是3x3的矩阵,x是三行的列矢量。 什么时候能说出三个方程组Ax = 0你有至少一个非零解吗? 使用行列式和线性独立性的概念建立答案下面是原题