What are the methods for solving a 3rd degree equation?

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Discussion Overview

The discussion centers around methods for solving a third-degree polynomial equation of the form x^3 - a*x^2 + b*x + c = 0, where a, b, and c are constants. Participants explore various approaches to find the roots of the equation, including both symbolic and numerical methods.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant inquires about the methods available for solving the cubic equation.
  • Another participant suggests that the solution is complex but refers to the cubic equation for guidance.
  • A third participant points to a previous thread where a solution was provided.
  • Another participant mentions resources from Mathworld that derive the formula for the roots of cubic polynomials and provides links to both symbolic and numerical solution methods.

Areas of Agreement / Disagreement

There is no consensus on a single method for solving the equation, and multiple approaches are suggested without resolving which is preferable.

Contextual Notes

Participants reference external resources and previous discussions, indicating that the topic may involve varying levels of complexity and assumptions about the methods used.

chandran
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i have a 3rd degree equation as follows. how can i solve this. What are the methods available?

x^3-a*x^2+b*x+c=0

i want to find x. a,b,c are all constants
 
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The solution is less than simple, but you can use the cubic equation so get it.
 
The solution to this was already given :

https://www.physicsforums.com/showthread.php?t=71782 [/URL]
 
Last edited by a moderator:

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