How Do You Solve 4x^2 - e^x = 0 Using Numerical Methods?

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SUMMARY

The discussion focuses on solving the equation 4x² - e^x = 0 using numerical methods. Participants suggest various approaches, including expanding e^x using Taylor series and employing the bisection method. A practical recommendation is to plot the functions y1(x) = 4x² and y2(x) = e^x to visually identify the intersection points, which represent the solutions to the equation. The conversation emphasizes the importance of selecting appropriate intervals for numerical methods.

PREREQUISITES
  • Understanding of numerical methods, specifically the bisection method
  • Familiarity with Taylor series expansion
  • Basic knowledge of plotting functions
  • Concept of finding roots of equations
NEXT STEPS
  • Learn about the bisection method for root-finding in numerical analysis
  • Study Taylor series expansion techniques for functions
  • Explore graphical methods for solving equations, including plotting functions
  • Investigate other numerical methods such as Newton-Raphson and Secant methods
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Students, mathematicians, and engineers interested in numerical analysis and solving nonlinear equations using various methods.

stunner5000pt
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Find the intervals containing solutions to the following equation

[tex]4x^2 - e^x = 0[/tex]
I haven o clue on where to start really?
WOuldi expand e^x using taylor series? i mean one could do this
[tex]x - 2ln x = ln 4[/tex]
so then would i do log expansion by taylor series? Or would i use bisection method? But how owuld i pick the two points for bisection method? Please assist!

And as always, your help is greatly appreciated!
 
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stunner5000pt said:
Find the intervals containing solutions to the following equation

[tex]4x^2 - e^x = 0[/tex]
I haven o clue on where to start really?
WOuldi expand e^x using taylor series? i mean one could do this
[tex]x - 2ln x = ln 4[/tex]
so then would i do log expansion by taylor series? Or would i use bisection method? But how owuld i pick the two points for bisection method? Please assist!

And as always, your help is greatly appreciated!

Why not just plot:

[tex]y1(x)=4x^2[/tex]

and

[tex]y2(x)=e^x[/tex]

interesections, bingo-bango.
 

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