x - 2y + 3z = a
2x + y + z = 4
-3x + 2y - 2z = -10
Additional test cases were added along with an improved solution-checking assertion.
Number of odd and even elements within matrix
Matrix to column conversion
Find out magnitude of vector
Divisible by 2
Numerate input arguments
Check if a string starts with another string
Find the product of the positive elements above the main diagonal.
Find the Sum of the Series:
Create cotangent function out of sine.
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