Additional test cases have been added.
Please check your test suites, results must have opposite signs.
Thanks! The problem now is reformulated;)
What is the distance from point P(x,y) to the line Ax + By + C = 0?
Replicate elements in vectors
Given a matrix, swap the 2nd & 3rd columns
Equal to their cube
Sum of series II
Sum of series VI
Sum of series III
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