Linear Algebra

Linear algebra operations on symbolic vectors and matrices

Linear algebra is the study of linear equations and their properties. Symbolic Math Toolbox™ provides functions to solve systems of linear equations. You can also analyze, transform, and decompose matrices using Symbolic Math Toolbox functions.

Functions

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Matrix Operations and Transformations

Matrix Operations

`cat`	Concatenate symbolic arrays along specified dimension
`colon`	Create symbolic vectors, array subscripting, and `for`-loop iterators
`horzcat`	Concatenate symbolic arrays horizontally
`sort`	Sort elements of symbolic arrays
`vertcat`	Concatenate symbolic arrays vertically

Matrix Transformations

`diag`	Create diagonal matrix or get diagonals from symbolic matrices
`reshape`	Reshape symbolic array
`tril`	Return lower triangular part of symbolic matrix
`triu`	Return upper triangular part of symbolic matrix

Linear Equations

Solving Linear Equations

`adjoint`	Classical adjoint (adjugate) of square matrix
`cond`	Condition number of matrix
`det`	Determinant of symbolic matrix
`equationsToMatrix`	Convert linear equations to matrix form
`inv`	Inverse of symbolic matrix
`linsolve`	Solve symbolic linear equations in matrix form
`norm`	Norm of symbolic vector or matrix
`pinv`	Moore-Penrose inverse (pseudoinverse) of symbolic matrix
`rank`	Rank of symbolic matrix
`rref`	Reduced row echelon form of matrix (Gauss-Jordan elimination)

Matrix Basis

`colspace`	Basis for column space of matrix
`null`	Form basis for null space of matrix
`orth`	Orthonormal basis for range of symbolic matrix

Matrix Factorization and Decomposition

Matrix Factorizations

`chol`	Cholesky factorization
`lu`	LU factorization
`qr`	QR decomposition of symbolic matrix
`svd`	Singular value decomposition of symbolic matrix

Eigenvalues and Eigenvectors

`charpoly`	Characteristic polynomial of matrix
`eig`	Eigenvalues and eigenvectors of symbolic matrix
`jordan`	Jordan normal form (Jordan canonical form)

Matrix Analysis & Vector Calculus

`curl`	Curl of symbolic vector field
`divergence`	Divergence of symbolic vector field
`gradient`	Gradient vector of symbolic scalar field
`hessian`	Hessian matrix of symbolic scalar function
`jacobian`	Jacobian matrix of symbolic function
`laplacian`	Laplacian of symbolic field
`potential`	Potential of vector field
`vectorPotential`	Vector potential of vector field

Normal Forms and Special Matrices

Normal Forms

`hermiteForm`	Hermite form of matrix
`jordan`	Jordan normal form (Jordan canonical form)
`smithForm`	Smith form of matrix

Special Matrices

`bernsteinMatrix`	Bernstein matrix
`toeplitz`	Symbolic Toeplitz matrix

Matrix Functions

`expm`	Matrix exponential of symbolic matrices
`funm`	General matrix function
`logm`	Matrix logarithm
`sqrtm`	Matrix square root

Topics

Symbolic Matrix Computation
This example shows how to perform simple matrix computations using Symbolic Math Toolbox™.
Linear Algebraic Operations
Perform linear algebra with symbolic expressions and functions.
Solve System of Linear Equations
Solve systems of linear equations in matrix or equation form.
Basic Algebraic Operations
Perform algebraic operations on symbolic expressions and function.
Singular Value Decomposition
Singular value decomposition (SVD) of a matrix.
Eigenvalues
Find eigenvalues, characteristic polynomials, and determinants of matrices.
Jordan Canonical Form
Convert matrix to Jordan normal form (Jordan canonical form).
Eigenvalues of the Laplace Operator
This example shows how to solve the eigenvalue problem of the Laplace operator on an L-shaped region.
Hilbert Matrices and Their Inverses
This example shows how to compute the inverse of a Hilbert matrix using Symbolic Math Toolbox™.

Featured Examples

Explore Single-Period Asset Arbitrage

Explore basic arbitrage concepts in a single-period, two-state asset portfolio.

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Markov Chain Analysis and Stationary Distribution

Derive the symbolic stationary distribution of a trivial Markov chain by computing its eigen decomposition.

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Matrix Rotations and Transformations

Do rotations and transforms in 3-D using Symbolic Math Toolbox™ and matrices.

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