Needs more Test Cases...
Please add more test cases !
Problem with the precision.
I've solved the problem with precision by simplifying the formula. However, the test suite should have some tolerance nonetheless.
Tolerance has been added to the test suite, along with additional cases.
First non-zero element in each column
Back to basics 6 - Column Vector
Count decimal digits of a number
Determine the square root
length of a vector
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