线性代数
联系向量、线性变换与矩阵计算,从几何和代数两个角度探索。
顺着知识,继续探索
方阵的行列式刻画带符号的体积缩放,且恰在矩阵可逆时非零。
Candidate from reviewed zh material v1: 对实方阵,行列式是带符号的数。在二维例子中,它的绝对值是列向量张成的平行四边形面积;符号记录定向。
Candidate from reviewed en material v1: For real square matrices, the determinant is a signed scalar. In the planar example its absolute value is the area of the parallelogram spanned by the columns. The sign records orientation.
联系向量、线性变换与矩阵计算,从几何和代数两个角度探索。