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?
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 any row in which a NaN appears
Project Euler: Problem 1, Multiples of 3 and 5
Max index of 3D array
02 - Vector Variables 4
Perfect Square or not
Inverse of Hilbert matrix
Center of mass
Fermat's Last Theorem - Fermat's conjecture
subtract central cross
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office