x is the abscissa. find the absolute value of cosine of -x and the same value with changed sign.
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...
pressure to dB?
Swap the input arguments
Matrix which contains the values of an other matrix A at the given locations.
Generate pi using logarithm
05 - Vector Equations 3
Given a matrix, return the last eigen value
Distance of the centroids of the balls
frame of the matrix
Find the function 2
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