Make a square matrix with this shape. For n=4
1 1 0 0
1 0 1 0
0 1 0 1
0 0 1 1
Angle between two vectors
Cell Counting: How Many Draws?
Change the sign of even index entries of the reversed vector
Is this triangle right-angled?
Compare two input matrices
Altitude of locations on the earth
Derivative of polynomial
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