Make fMat be a 5x3 matrix of random integers with values from -3 to 3
(Hint: use randi)
Test for randomness could be tightened (cf. Solution 1490988).
Arrange Vector in descending order
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Whether the input is vector?
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06 - Matrix Equations 1
03 - Matrix Variables 3
07 - Common functions and indexing 5
07 - Common functions and indexing 1
07 - Common functions and indexing 2
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