MATH
254
Linear Algebra
Winter 2015
St. Francis Xavier University |
Chapter 5 Independence
and Basis in Rm
- Section 5.1, pages 221-223: 1, 3, 7,
13, 15, 17, 19, 23, 25, 28, 29, 30, 31. Key ideas: linear combinations,
linear independence, linear dependence, elementary columns/vectors, testing
for LI/LD
- Section 5.2, pages 226-227: 1, 3, 5, 7,
9, 11, 13, 15, 19, 21, 23, 27. Key ideas: subspace, solutions
space for a matrix, span of a set of vectors, finding spanning sets
- Section 5.3, pages 234-237: 1, 3, 5, 7,
9, 11, 13, 17, 19, 21, 23, 25, 30. Key Ideas: basis for a
subspace, dimension, dimension of solution space, determining whether or not a
set of vectors is a basis for a given subspace
- Section 5.4, pages 240-241: 1, 3, 7, 9, 13,
15, 25. Key Ideas: column space, column rank, row space, row rank, rank
theorem
Chapter 6 Vector Spaces
- Section 6.1, pages 258-259: 1, 3, 5, 7,
9, 11, 17, 19. Key Ideas: axioms for vector spaces, subspaces,
examples like matrices, polynomials, complex numbers, real-valued functions
- Section 6.2, pages 266-267: all odd. Key Ideas:
definition of linear independence for vector spaces, spanning set, basis,
dimension
- Section 6.3, pages 271-273: 1, 3, 5, 7,
9, 13, 15, 19, 21. Key Ideas: coordinate vectors, using
coordinate vectors to determine if LI, spans
- Section 6.4, pages 283-285: 1, 3, 7, 9,
11, 17, 19, 21, 23. Key Ideas: inner product, Cauchy-Schwarz
inequality, orthogonal sets and orthogonal bases, Gram-Schmidt
- Section 6.8, pages 311: 1, 2, 3, 4.
Key Ideas: using vectors and orthogonal projections to make fractals,
the Koch curve
Chapter 7 Linear
Transformations
- Section 7.1, pages 328-329:
1,3,5,7,9,11,13,17,21, 25. Key ideas: definition of a linear
transformation, the zero transformation, the identity
transformation, rotation, reflection, knowing what happens on
a spanning set/basis is enough to know what happens everywhere.
- Section 7.2, pages 338-339:
1,3,5,7,9,11,13,17,27. Key Ideas: The algebra of linear
transformations (sum, difference, negative, scalar
multiple, product and powers), be able to use/apply any of the
items in Theorem 3, the matrix of a linear transformation, Theorems 5
and 6 for associated matrices
- Section 7.3, pages 347-348:
1,3,5,7,9,11,13,15,19,21,27,29,31. Key Ideas: the kernel
and image of a linear transformation, one-to-one, onto,
nullity+rank=dimV
- Section 7.7, pages 377-378: 1, 2, 3.
Key Ideas: Contractive affine maps, iterated function systems (IFS)
Chapter 8 Eigenvalues and
Eigenvectors
- Section 8.1, pages 389-390: 1, 3, 5, 7,
9, 11, 21, 23. Key Ideas: definition of eigenvalue and
eigenvector for a general linear transformation, eigenspace
- Section 8.2, pages 398-3400: 1, 3, 5,
13, 17, 19, 31. Key Ideas: similar matrices (see notes),
what it means for a matrix to be diagonalizable, procedure for
diagonalizing, conditions for being diagonalizable, symmetric matrices,
orthogonal matrices, orthogonally diagonalizable, condition for being
orthogonally diagonalizable
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Last updated April 13, 2015