Sigh! There should really be some quality control on Cody, to save us from stupid problems like this...
The third element of aVec in the the image contained within your problem description does not match the third element of aVec used in the test suite.
Distance walked 3D
What number has this problem?
07 - Common functions and indexing 5
Reverse a matrix
07 - Common functions and indexing 1
07 - Common functions and indexing 2
02 - Vector Variables 5
03 - Matrix Variables 3
07 - Common functions and indexing 6
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