你这书不对,下面是
http://math.mit.edu/linearalgebra/上的目录,你不能总蒙事啊!!
Table of Contents for ILA
1   Introduction to Vectors
    1.1 Vectors and Linear Combinations 
    1.2 Lengths and Dot Products 
    1.3 Matrices
2 Solving Linear Equations
    2.1 Vectors and Linear Equations 
    2.2 The Idea of Elimination 
    2.3 Elimination Using Matrices 
    2.4 Rules for Matrix Operations 
    2.5 Inverse Matrices 
    2.6 Elimination = Factorization: A = LU 
    2.7 Transposes and Permutations
3 Vector Spaces and Subspaces
    3.1 Spaces of Vectors 
    3.2 The Nullspace of A: Solving Ax = 0 
    3.3 The Rank and the Row Reduced Form 
    3.4 The Complete Solution to Ax = b 
    3.5 Independence, Basis and Dimension 
    3.6 Dimensions of the Four Subspaces
4 Orthogonality
    4.1 Orthogonality of the Four Subspaces 
    4.2 Projections 
    4.3 Least Squares Approximations 
    4.4 Orthogonal Bases and Gram-Schmidt
5 Determinants
    5.1 The Properties of Determinants 
    5.2 Permutations and Cofactors 
    5.3 Cramer's Rule, Inverses, and Volumes
6 Eigenvalues and Eigenvectors
    6.1 Introduction to Eigenvalues 
    6.2 Diagonalizing a Matrix 
    6.3 Applications to Differential Equations 
    6.4 Symmetric Matrices 
    6.5 Positive Definite Matrices 
    6.6 Similar Matrices 
    6.7 Singular Value Decomposition (SVD)
7 Linear Transformations
    7.1 The Idea of a Linear Transformation 
    7.2 The Matrix of a Linear Transformation 
    7.3 Diagonalization and the Pseudoinverse
8 Applications
    8.1 Matrices in Engineering 
    8.2 Graphs and Networks 
    8.3 Markov Matrices, Population, and Economics 
    8.4 Linear Programming 
    8.5 Fourier Series: Linear Algebra for Functions 
    8.6 Linear Algebra for Statistics and Probability 
    8.7 Computer Graphics
9 Numerical Linear Algebra
    9.1 Gaussian Elimination in Practice 
    9.2 Norms and Condition Numbers 
    9.3 Iterative Methods for Linear Algebra
10 Complex Vectors and Matrices
    10.1 Complex Numbers 
    10.2 Hermitian and Unitary Matrices 
    10.3 The Fast Fourier Transform
Solutions to Selected Exercises
Matrix Factorizations
Conceptual Questions for Review
Glossary: A Dictionary for Linear Algebra
Index
Teaching Codes