x - 2y + 3z = a
2x + y + z = 4
-3x + 2y - 2z = -10
Additional test cases were added along with an improved solution-checking assertion.
Determine whether a vector is monotonically increasing
Increment a number, given its digits
Matlab Basics - Convert a row vector to a column vector
Create cotangent function out of sine.
Check if a string starts with another string
Find the sum of the negative elements under the main diagonal.
Numerate input arguments
Return ! if array element starts with a certain letter. Otherwise return ?
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