In addition to the weak test suite: The title of the problem says "Sinus function", yet the (incomplete) problem description mentions only "cosine" ??? Furthermore, should abs(cos(-x)) be assigned to y, or to z?
The test description has been updated. Also, new and improved test suites are added within the scope of the problem.
Please improve the test cases. Returning 1 and -1 is complete enough with these sloppy tests.
bad test suite
The test suite is not very rigorous...
Make the vector [1 2 3 4 5 6 7 8 9 10]
Back to basics 25 - Valid variable names
Compute a dot product of two vectors x and y
Create an 'arrow-head" matrix
Find the function
Center of mass
subtract central cross
Fermat's Last Theorem - Fermat's conjecture
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