invhilb                        - Inverse Hilbert matrix.
ipermute                       - Inverse permute array dimensions.
dramadah                       - Matrix of zeros and ones with large determinant or inverse.
invhess                        - Inverse of an upper Hessenberg matrix.
betaincinv                     - Inverse incomplete beta function.
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bsxfun:                 @atan2	        Four-quadrant inverse tangent; result in radians
bsxfun:                 @atan2d	        Four-quadrant inverse tangent; result in dgrees

gallery:     dramadah    Matrix of ones and zeroes whose inverse has large integer entries.
gallery:     invhess     Inverse of an upper Hessenberg matrix.

hilb:     calculates the exact inverse.

invhilb: Inverse Hilbert matrix.
invhilb:     IH = INVHILB(N) is the inverse of the N-by-N matrix with elements

ipermute: Inverse permute array dimensions.
ipermute:     A = IPERMUTE(B,ORDER) is the inverse of permute.  IPERMUTE rearranges
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