A system has the following characteristic equation: s4 + s3 - s - 1 Select one:...

 

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A system has the following characteristic equation: s4 + s3 - s - 1 Select one: O a. It is stable b. It has four mirrored root O c. It has three mirrored roots d. It has one mirrored pair of roots e. It has two mirrored pairs of roots A system has the following characteristic equation: s4 + s3 - s - 1 Select one: O a. It is stable b. It has four mirrored root O c. It has three mirrored roots d. It has one mirrored pair of roots e. It has two mirrored pairs of roots