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...
Remove all the words that end with "ain"
convert matrix to single column
07 - Common functions and indexing 4
Find and replaces spaces from a input string with *
Square a Number
Center of mass
Distance of the centroids of the balls
Given a matrix, return the last eigen value
subtract central cross
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