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Topic: Finding roots of cubic symbolic polynomials
Replies: 8   Last Post: Aug 13, 2014 10:54 AM

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Steven Lord

Posts: 1,032
Registered: 9/26/13
Re: Finding roots of cubic symbolic polynomials
Posted: Aug 13, 2014 9:38 AM
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"Sanaa " <findingsanaa@yahoo.com> wrote in message
news:lsfopu$kg6$1@newscl01ah.mathworks.com...
> "Nasser M. Abbasi" wrote in message <lsflaa$k11$1@speranza.aioe.org>...
>> On 8/13/2014 7:08 AM, Sanaa wrote:
>> > Hi,
>> > I need to calculate the roots of a cubic symbolic polynomials. It
>> > contains 7 parameters.
>> > Any help is appreciated.
>> > Thank you
>> >

>>
>> help solve

> I have tried this, but it asks about segma?
> function sols = solve_cubic( segma, beta, mu, nu, delta, gamma)
> syms lambda sols =
> solve(lambda^3+lambda^2*(nu*mu+delta*mu+gamma*mu+segma*beta*mu+mu^2)+lambda*(delta*mu^2+gamma*mu^2+nu*gamma*mu+segma*gamma*mu-segma*mu*beta))
> end


Show the group EXACTLY how you called solve_cubic and the FULL text of any
error or warning messages you received. The group should be able to call
solve_cubic using ONLY your instructions on how to call it.

--
Steve Lord
slord@mathworks.com
To contact Technical Support use the Contact Us link on
http://www.mathworks.com




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