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  • Determinants

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  • Particular types of matrices
  • Definition of trace of a matrix
  • Cofactors
  • Determinants and operations on matrices
  • Determinants axiomatically
  • The determinant of a matrix measures the area/volume of the parallelogram/parallelipiped determined by its columns.
  • The determinant of the matrix of a linear transformation is the factor by which the area/volume changes.
  • Definition of adjugate/classical adjoint of a matrix
  • A matrix is called ill-conditioned if it is nearly singular
  • The condition number of matrix measures how close it is to being singular
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Description:Added geometric interpretation of determinant
# The determinant of a matrix measures the area/volume of the parallelogram/parallelipiped determined by its columns.

Put content here**Theorem:** The absolute value of the determinant of a matrix measures the area (2D), volume (3D), or hypervolume (nD) of the parallelogram/parallelepiped determined by its columns. If $A$ maps the unit cube, then $|\det(A)|$ is the volume of the image.

# Parents

* Determinants
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