Good day,
I would like to ask about the inverse of covariance matrix from the coding below (using maple):
Anyone know why the inverse A can't be computed?
Thank you for your help!
2026-03-26 01:06:18.1774487178
Maple: Inverse of Covariance Matrix
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Your formula t is clearly wrong because the units don't match on both sides of the minus sign. Shouldn't the first term be divided by $n^2$? If you make that change, then the matrix is invertible.
You should compute the inverse using j:= A^(-1). The inverse command and the whole linalg package have long been deprecated.