Summary Linear Algebra with notes and solved exercises.
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Course
Engineering mathematics
Institution
Engineering Mathematics
The essentials of Linear Algebra with solved exercises in this comprehensive document. Covering fundamental concepts such as vectors, matrices, systems of linear equations, and eigenvalues, this resource also includes six pages of solved exercises to solidify your understanding. Perfect for high sc...
Mastering Linear Algebra: Comprehensive Notes and Exercises
1. Introduction to Linear Algebra
Linear Algebra is a branch of mathematics that deals with vectors, vector spaces, linear
transformations, and systems of linear equations. It is fundamental to various fields of
science and engineering.
2. Vectors and Vector Spaces
Vectors: Objects that have both a magnitude and a direction.
Vector Spaces: A collection of vectors that can be added together and multiplied by scalars.
3. Matrices
Matrix Operations: Addition, subtraction, and multiplication.
Determinants and Inverses: Properties and methods to calculate them.
Special Matrices: Identity matrix, diagonal matrix, symmetric matrix, etc.
4. Systems of Linear Equations
Solving Systems: Methods like Gaussian elimination and Cramer's rule.
Homogeneous Systems: Systems with a unique solution or infinitely many solutions.
5. Eigenvalues and Eigenvectors
Eigenvalues: Scalars that indicate how a linear transformation changes vectors.
Eigenvectors: Vectors that do not change direction under a linear transformation.
6. Linear Transformations
Definition: A function that maps vectors to vectors in a linear manner.
Matrix Representation: Representing linear transformations using matrices.
7. Exercises and Solutions
Exercise 1: Vector Addition
Given vectors a = (2, 3) and b = (1, 4), find a + b.
**Solution:**
a + b = (2, 3) + (1, 4) = (2 + 1, 3 + 4) = (3, 7)
Exercise 2: Scalar Multiplication
Find 3a where a = (-1, 2).
**Solution:**
3a = 3(-1, 2) = (-3, 6)
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