10-25-2013, 08:49 AM

Let's assume the following matrix:

[[4 5 7] [8 9 0] [5 6 2]]

The determinant (as given by my Prime (hardware & emulator, both running version 2013 8 13. Rev:5016)) is 13.

The transposed matrix is:

[[4 8 5] [5 9 6] [7 0 2]]

The corresponding determinant is 13.0000000002

Why? Shouldn't they be the same?

btw: my HP15C also makes a small error (-2e-8) in the determinant of the transposed matrix...