Most nonzero elements in row
Switch matrix to a column vector
Evaluating a polynomial
Matlab Basics II - squares
Area of a Square
Generate n equally spaced "intervals" between -x and x (★)
PEMDAS test (★★)
Make a checkerboard matrix (★★★★★)
Swap the first and last columns (★★)
Sum of elements of a vector (★★★)
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