Make the following variable:
A 9x9 matrix of zeros, but with the following values on the main diagonal:
(Hint: use diag)
Summing Digits within Text
Whether the input is vector?
Matlab Basics - Create a row vector
Finding perimeter of a rectangle
07 - Common functions and indexing 6
04 - Scalar Equations 2
07 - Common functions and indexing 4
03 - Matrix Variables 4
06 - Matrix Equations 1
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