Switch assignments for variables x and y, for example
start with x = 1 and y = 3
end with y = 1 and x = 3
Do NOT simply re-assign variables, use a temporary variable 'z'
Remove any row in which a NaN appears
Back to basics 5 - Clipboard
Determine Whether an array is empty
Find the area of the four walls
Matlab Basics II - Find the roots of a function
Matlab Basics II - squares
Matlab Basics - Rounding II
Matlab Basics - Convert a row vector to a column vector
Replace every 3rd element in a vector with 4
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