When the input is true, return 'on', otherwise, return 'off'.
The problem statement is misleading. 'if x' and 'if isequal(x, true)' are different conditions.
Remove the polynomials that have positive real elements of their roots.
Whether the input is vector?
Convert a vector into a number
Matrix to column conversion
Power supply: 230V to 115V
Wayfinding n - Avoid linear obstacles
Mmm! Multi-dimensional Matrix Multiplication
Wayfinding 2 - traversing
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