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).
Who knows the last digit of pi?
Generate pi using logarithm
Find out sum of all elements of given Matrix
Divide by 4
03 - Matrix Variables 4
02 - Vector Variables 1
05 - Vector Equations 1
07 - Common functions and indexing 5
07 - Common functions and indexing 1
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