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## Homework Statement

http://img24.imageshack.us/img24/9028/72841137.jpg [Broken]

## Homework Equations

Routh-Hurwitz Stability Criterion

## The Attempt at a Solution

For first question, you just write the Routh Array, make sure that the first row is all positive and you get Kmax = 1. Simple enough

How would I approach the second question though? Any starters would be sincerely appreciated.

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