No challenge if players can just COPY-AND-PASTE the formula from the Problem Statement! There should also be more test cases (minimum of four).
Formula removed from the problem statement and additional test cases added.
Problem statement itself includes the answer.
Sum of diagonal of a square matrix
Is the input divisible by 3?
MATLAB Basic: rounding III
Solve equation numerically
Calculate inverse matrix in m by n matrix
Solve the system of linear equations
How to calculate log?
Change matrix to vector
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