What you're looking for is not called the "characteristics equation", but the characteristic polynomial.
More test cases, please. ;-)
Back to basics 25 - Valid variable names
Find out sum of all elements of given Matrix
Matlab Basics - y as a function of x
Matlab Basics II - Free Fall
Find the product of a Vector
find out eigenvector of matrix
Number of Flip Flop required in ripple counter
Create Vector containing following elements
Create an anti-identity matrix
Find out phase angle of second order system.
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