Test 4 is wrong; y_correct should be [1; 2; 4]
I´m afraid all tests are correct. But thanks anyway!
Make a checkerboard matrix
Is the Point in a Circle?
Change the sign of even index entries of the reversed vector
Say something funny
first element of matrix
Get the mean digit
Sum of a geometric series
Alternate list of elements
Approximate the inverse tangent by power series
Ratio between sums of prime and non-prime numbers
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