x and y are input vectors, d is a number and contains their dot product
There could be other test cases for this particular problem such as for example if one of the inputs (either x or y) is a column vector.
How to find the position of an element in a vector without using the find function
Determine if a Given Number is a Triangle Number
Project Euler: Problem 8, Find largest product in a large string of numbers
2 b | ~ 2 b
Matlab Basics II - Intervals
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