Define the matrix cMat:
( cMat = 10x10 matrix where the numbers from 1 to 100 runs down the columns )
Create the variable cSub, defined as the submatrix of cMat containing rows 2-9 and columns 2-9 of cMat
Check if number exists in vector
multiply by three
06 - Matrix Equations 1
03 - Matrix Variables 2
03 - Matrix Variables 6
07 - Common functions and indexing 3
02 - Vector Variables 4
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