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
Find the two most distant points
Duplicate each element of a vector.
Multiply 2 numbers
Generate a random matrix A of (1,-1)
Find the index of n in magic(n)
Altitude of locations on the earth
Derivative of polynomial
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