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  • Matrices

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  • Basic terminology and notation
  • Operations on matrices
  • Particular types of matrices
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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 determinants overview
# Determinants

Put content here**Determinants** are scalar values computed from square matrices that encode important properties. The determinant measures whether a matrix is invertible ($\det \neq 0$), gives the volume scaling factor of the linear transformation, and appears in eigenvalue theory, Cramer rule, and change of variables.

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* Matrices
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