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Reference Guide for OpenMatrix Language Functions
The Reference Guide contains documentation for all functions supported in the OpenMatrix language.
Linear Algebra Commands
rcond
Compute the 1-norm estimate of the reciprocal condition number.

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- Scripting Guide for OpenMatrix Language
  OpenMatrix is a mathematical scripting language.
- Reference Guide for OpenMatrix Language Functions
  The Reference Guide contains documentation for all functions supported in the OpenMatrix language.
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    - balance
      Returns a matrix with rows and columns of roughly equal magnitude.
    - bicgstab
      Solve a system of linear equations with the biconjugate gradient stabilized method.
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      Cholesky decomposition.
    - cond
      Compute the condition number of a matrix.
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      Determines if x is a square matrix.
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      Determines if the input is a lower triangular matrix.
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      Determines if the input is a upper triangular matrix.
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      Kronecker matrix product.
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      Kronecker matrix product object.
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      LDL decomposition.
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      LU decomposition.
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      Compute matrix and vector norms.
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      Solve a system of linear equations with the preconditioned conjugate gradient method.
    - pinv
      Compute the matrix pseudo-inverse.
    - qr
      QR decomposition.
    - rank
      Compute the rank of matrix A.
    - rcond
      Compute the 1-norm estimate of the reciprocal condition number.
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      Schur decomposition.
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      Sparse matrix creation.
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      Sparse identity matrix creation.
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      Set non-zero matrix elements to 1.
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      Singular value decomposition.
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      Computes the Toeplitz matrix.
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      Compute the trace of a matrix, the sum of the diagonal elements.
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    - tril
      Returns a lower triangular matrix.
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      Returns a upper triangular matrix.
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Frequently Asked Questions
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rcond

Compute the 1-norm estimate of the reciprocal condition number.

Syntax

R = rcond(x)

Inputs

x: A square matrix.; Dimension: matrix

Outputs

R: The estimated result.

Example

Simple input.

rcond([1,4,-3;8,1.2,2;-6,4.3,-6])

R = 0.00242683797