Matrix Inverse/Divide

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Z←⌹R returns the inverse of the right argument.
R is a numeric scalar, vector or matrix. If R is a matrix, ≥/⍴R must be true.
Z is a numeric array of rank ⍴⍴R, and shape ⌽⍴R.

This feature implements matrix inversion using Singular Value Decomposition. In particular, this means that any numeric array meeting the rank and shape requirements above is invertible.

For example,

      ⌹3 3⍴0
 0 0 0
 0 0 0
 0 0 0