Make the following variable:
A 3x4 NaN (Not a Number) matrix
(Hint: use nan)
Test suite check will work for incorrect answers too :(
Back to basics 23 - Triangular matrix
Back to basics 25 - Valid variable names
Remove the positive integers.
Finding perimeter of a rectangle
04 - Scalar Equations 3
06 - Matrix Equations 2
07 - Common functions and indexing 5
01 - Scalar variables
03 - Matrix Variables 3
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