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HomeHomework HelpmathematicsLinear Transformations

Linear Transformations

Linear transformations are functions that map vectors to vectors while preserving the operations of vector addition and scalar multiplication. The determinant of a transformation matrix provides a scalar value that indicates how the transformation affects the area or volume of geometric shapes in its domain.

intermediate
3 hours
Mathematics
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Overview

Linear transformations are essential in mathematics, allowing us to map vectors in a way that preserves their structure. They can be represented using matrices, which simplifies calculations and provides a clear geometric interpretation. Determinants play a crucial role in understanding the properti...

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Key Terms

Vector
A quantity with both magnitude and direction.

Example: Velocity is a vector because it has speed and direction.

Matrix
A rectangular array of numbers arranged in rows and columns.

Example: A 2x2 matrix can represent a linear transformation in 2D space.

Linear Transformation
A function that maps vectors while preserving vector addition and scalar multiplication.

Example: Rotating a vector in the plane is a linear transformation.

Determinant
A scalar value that provides information about a matrix, such as its invertibility.

Example: The determinant of a 2x2 matrix can be calculated as ad - bc.

Invertible Matrix
A matrix that has an inverse, meaning it can be reversed.

Example: A matrix is invertible if its determinant is not zero.

Eigenvalue
A scalar that indicates how much a transformation stretches or shrinks a vector.

Example: In the transformation Ax = λx, λ is the eigenvalue.

Related Topics

Eigenvalues and Eigenvectors
Study the concepts of eigenvalues and eigenvectors, which are essential in understanding linear transformations.
intermediate
Matrix Factorization
Learn about different methods of matrix factorization, which are useful in simplifying complex transformations.
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Vector Spaces
Explore vector spaces, which are foundational for understanding linear transformations and their properties.
intermediate

Key Concepts

Vector SpacesMatrix RepresentationDeterminant CalculationGeometric Interpretation