x - 2y + 3z = a
2x + y + z = 4
-3x + 2y - 2z = -10
Additional test cases were added along with an improved solution-checking assertion.
Reverse the vector
Replacing a row
Sum of series VI
Volume of a box
Solve the following boundary value problem
Numerate input arguments
Return the amount of palindromes (words) in the string.
Check if a string starts with another string
Find the sum of the negative elements under the main diagonal.
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