Given four coordinates, write a function to check if they form a square on the XY plane.
Back to basics 8 - Matrix Diagonals
Getting the indices from a vector
07 - Common functions and indexing 6
Matlab Basics - Switching Assignments
Alternating 1´s and 0´s in a matrix
Approximate the inverse tangent by power series
Alternate list of elements
Get the value 100
Sum of a geometric series
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