1. May 31, 2008 #1

   niwde

   

   Hi, anyone can advise how to solve a 4th order equation with trial and error method?
   
   This is the equation:
   
   3s^4 + 10s^3 + 21s^2 + 24s - 16 = 0

    

   niwde, May 31, 2008
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3. Jun 1, 2008 #2

   epheterson

   

   I'm kinda new to DE's, but where's the ds/dy?

    

   epheterson, Jun 1, 2008
4. Jun 1, 2008 #3

   Dumbledore

   

   Forget trial and error, use the quartic formula.

    

   Dumbledore, Jun 1, 2008
5. Jun 1, 2008 #4

   ForMyThunder

   

   Yeah, this isn't a differential equation, just an algebraic quartic equation.
   
   I haven't heard of Trial and Error in a while but I think it is something like guessing values for which this equation is true such as c and then dividing the original equation by s-c and repeating this until you have all four roots.

    

   ForMyThunder, Jun 1, 2008

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