Change rows to columns and columns to rows, similar to transpose.
Result should be
(hint: use permute)
Which values occur exactly three times?
Back to basics 1 - Saving
Perfect Square or not
Replace every 3rd element in a vector with 4
Weighted moving average
Solve the system of linear equations
Calculate inverse matrix in m by n matrix
Extract a specific part of matrix!
Solve system of equation!
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