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Last Post 27 Aug 2014 07:12 PM by Stephen Hazelton. 1 Replies.
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aditi shah
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11 Apr 2014 12:21 PM
    how to find the roots of eqn.....1+5/2 z^-1+2 z^-2+2 z^-3.
    Stephen Hazelton
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    27 Aug 2014 07:12 PM
    Multiply by z^3 and you have a standard cubic equation. Find one root numerically, factor that out, find remaining roots by quadratic formula.

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