Calculate the area of a triangle between three points
Sum the elements in either diagonal of a square matrix
Maximum value in a matrix
03 - Matrix Variables 4
Doubling elements in a vector (★★)
Generate n equally spaced "intervals" between -x and x (★)
Mo money, mo math #2! (★★★)
Swap the first and last columns (★★)
Matrix indexing with two vectors of indices (★★)
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