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).
Reverse the vector
Solve the set of simultaneous linear equations
Getting the indices from a matrice
select the primes of a vector
Divide by 4
05 - Vector Equations 3
07 - Common functions and indexing 1
04 - Scalar Equations 1
03 - Matrix Variables 3
02 - Vector Variables 2
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