5
$\begingroup$
A = {{1., 0.}, {0., 2.}};
LinearAlgebra`MatrixConditionNumber[A]
$\endgroup$
  • 3
    $\begingroup$ Try LinearAlgebra`Private`MatrixConditionNumber. $\endgroup$ – Carl Woll Jul 10 at 15:00
  • $\begingroup$ See the “Between Versions 11.1 and 11.2” section here. $\endgroup$ – Chip Hurst Jul 14 at 1:46
7
$\begingroup$

After @CarlWoll's comment:

You can search for undocumented functions by using Names

Names["*`" <> "MatrixConditionNumber" <> "*"]
(* {"LinearAlgebra`Private`MatrixConditionNumber"} *)

Now calling the correct function name

A = {{1., 0.}, {0., 2.}};
LinearAlgebra`Private`MatrixConditionNumber[A]
(* 2. *)
$\endgroup$

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