Solving polynomials for variable (x)

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SUMMARY

The discussion focuses on solving polynomials for the variable x, specifically in the context of finding centroids of 2D graphs using double integrals. The user encounters difficulties with cubic equations, such as y = x + x^3, and seeks methods for solving these polynomials. The consensus is that there is no straightforward method for solving cubic equations, and alternative geometric approaches may provide simpler solutions. The importance of flexibility in problem-solving methods is emphasized.

PREREQUISITES
  • Understanding of double integrals in calculus
  • Familiarity with polynomial equations, particularly cubic functions
  • Basic knowledge of geometry related to graphing
  • Experience with centroid calculations in 2D spaces
NEXT STEPS
  • Research methods for solving cubic equations, including Cardano's formula
  • Explore geometric approaches to finding centroids of 2D shapes
  • Learn about numerical methods for approximating polynomial roots
  • Investigate software tools for symbolic computation, such as Wolfram Alpha
USEFUL FOR

Students and professionals in mathematics, particularly those involved in calculus, geometry, and computational methods for solving polynomial equations.

pearss
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Homework Statement



I'm doing work finding the centroids of 2d graphs. I'm working these problems using double integrals of regions that are horizontally or vertically simple. To do this I have to be able to convert line equations from one variable to the other. Some are simple but others I'm having trouble with such as:

y = x + x^3

Are there any useful methods for solving for x in these difficult polynomials?

Thanks much
 
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No. There's no simple way to solve a cubic. Why don't you give an example of the sort of problem you are trying to deal with? There may be a simpler way.
 
oh i see. There is in fact another way (using geometry) but i was being stubborn and trying to force the double integrals. Thank you for the help sir :D
 

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