What you're looking for is not called the "characteristics equation", but the characteristic polynomial.
More test cases, please. ;-)
Number of 1s in a binary string
Rotate a Matrix by 90 degrees
Determine the square root
Find the mode of the given input
Matlab Basics II - Free Fall
Add one raw in given matrix as shown in example
Find out sum of all elements of given Matrix
Crate a vector of logarithmically spaced
Check transmitted data follow even parity (True or false)
Average speed for the entire trip
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