Make the following variable:
A 9x9 matrix of zeros, but with the following values on the main diagonal:
(Hint: use diag)
Remove the air bubbles
Generate a string like abbcccddddeeeee
07 - Common functions and indexing 1
Add a row of zeros on top of a matrix
07 - Common functions and indexing 3
05 - Vector Equations 2
03 - Matrix Variables 6
02 - Vector Variables 1
06 - Matrix Equations 3
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