What you're looking for is not called the "characteristics equation", but the characteristic polynomial.
More test cases, please. ;-)
Sum the numbers on the main diagonal
04 - Scalar Equations 1
Fibonacci-Sum of Squares
Crate a vector of logarithmically spaced
Flip the vector from right to left
Find out value of polynomial at different value.
Convert decimal to hex as shown in test cases
Create vector as shown in test cases
Number of Flip Flop required in ripple counter
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