Find how many solutions this ln polinomial equation has

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SUMMARY

The discussion focuses on determining the number of solutions for the polynomial equation 2x^3lnx + x^2 - 4x + a = 0. Participants suggest analyzing the function's critical points by finding its maxima and minima, which will help ascertain the number of solutions. The undefined nature of ln(0) is acknowledged, indicating that x=0 must be treated with caution in the analysis. The Taylor series expansion around 0 is considered but deemed impractical due to the undefined logarithmic term.

PREREQUISITES
  • Understanding of polynomial equations and their properties
  • Knowledge of logarithmic functions, specifically ln(x)
  • Familiarity with calculus concepts such as maxima and minima
  • Experience with Taylor series expansions
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  • Explore the behavior of the function 2x^3lnx + x^2 - 4x + a using calculus
  • Learn how to find critical points and analyze their significance
  • Study the implications of undefined values in logarithmic functions
  • Investigate the application of Taylor series in approximating functions near singular points
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Mathematicians, calculus students, and anyone involved in solving polynomial equations or analyzing logarithmic functions.

transgalactic
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[tex] 2x^3lnx+x^2-4x+a=0[/tex]
i thought of building a taylor series around 0 for ln
but ln(0) is undefined

??
 
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I would find how many max min it has then knowing the each max min position I can determine the number of solutions.
Take care of the x= 0 too.
 

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