Reading notes of Linear Algebra and It's Applications (fourth editon)
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Chapter 1 Linear Equations in Linear Algebra
1.1 Systems of Linear Algebra
definition :A system of linear equation (linear system)is a collection of one or more linear equations() involvingthe same variables.
solutions about a system of linear equation
Matrix Nations
the system
can be represented by matrix
called coefficient matrix
and this one
called argumented matrix
Solving a Linear System
row equipment
Existence and Uniqueness Questions?
1.2 Row Reduction And Echelon Forms
definition:echelon form
echelon form:
reduced echelon form
THEOREM 1
Pivot Positions
defination:
Solutions of Linear System
free variable
Existence and Uniqueness Questions
THEOREM 2
what's more
1.3 Vector Equations
Vectors in R^2
column vector (vector ,a line with arrow)
Geometric Descriptions of R^2
Vectors in R^3
Vectors in R^n
zero vector
Linear Combinations
definations:
definations:
A Geometric Description of Span{u} and Span{u,v}
1.4 The Matrix Equation Ax=b
definition:
THEOREM 3
Existence of Solutions
THEOREM 4
Properties of Matrix-Vector Product Ax
THEOREM 5
1.5 Solutuion Set of Linear System
HomogeneousLinear System
definition:
Parametric Vector Form
Solutionss of Nohomogeneous System
THEOREM 6
1.7 Lnear Independence
defination:
THEOREM 7
THEOREM 8
THEOREM 9
1.8 Introduction to Linear Transformations
range & domain
Matrix Transformations
defination:
1.9 The Matrix of A Linear Transformation
example
THEOREM 10
Geometric Linear Transformations of R^2
Existence and Uniqueness Questions
defination:
defination:
THEOREM 11
THEOREM 12
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