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Fundamentals of Matrix Algebra, 2011a

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Contents<br />

Thanks<br />

Preface<br />

Table <strong>of</strong> Contents<br />

iii<br />

v<br />

vii<br />

1 Systems <strong>of</strong> Linear Equaons 1<br />

1.1 Introducon to Linear Equaons . . . . . . . . . . . . . . . . . . . . 1<br />

1.2 Using Matrices To Solve Systems <strong>of</strong> Linear Equaons . . . . . . . . . 5<br />

1.3 Elementary Row Operaons and Gaussian Eliminaon . . . . . . . . . 12<br />

1.4 Existence and Uniqueness <strong>of</strong> Soluons . . . . . . . . . . . . . . . . . 22<br />

1.5 Applicaons <strong>of</strong> Linear Systems . . . . . . . . . . . . . . . . . . . . . 34<br />

2 <strong>Matrix</strong> Arithmec 45<br />

2.1 <strong>Matrix</strong> Addion and Scalar Mulplicaon . . . . . . . . . . . . . . . 45<br />

2.2 <strong>Matrix</strong> Mulplicaon . . . . . . . . . . . . . . . . . . . . . . . . . . 51<br />

2.3 Visualizing <strong>Matrix</strong> Arithmec in 2D . . . . . . . . . . . . . . . . . . . 66<br />

2.4 Vector Soluons to Linear Systems . . . . . . . . . . . . . . . . . . . 80<br />

2.5 Solving <strong>Matrix</strong> Equaons AX = B . . . . . . . . . . . . . . . . . . . . 97<br />

2.6 The <strong>Matrix</strong> Inverse . . . . . . . . . . . . . . . . . . . . . . . . . . . 103<br />

2.7 Properes <strong>of</strong> the <strong>Matrix</strong> Inverse . . . . . . . . . . . . . . . . . . . . 112<br />

3 Operaons on Matrices 121<br />

3.1 The <strong>Matrix</strong> Transpose . . . . . . . . . . . . . . . . . . . . . . . . . . 121<br />

3.2 The <strong>Matrix</strong> Trace . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131<br />

3.3 The Determinant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135<br />

3.4 Properes <strong>of</strong> the Determinant . . . . . . . . . . . . . . . . . . . . . 146<br />

3.5 Cramer’s Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159<br />

4 Eigenvalues and Eigenvectors 163<br />

4.1 Eigenvalues and Eigenvectors . . . . . . . . . . . . . . . . . . . . . . 163<br />

4.2 Properes <strong>of</strong> Eigenvalues and Eigenvectors . . . . . . . . . . . . . . 177

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