Power Series Method: Solve y'' + 2xy' + 2y = 0

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SUMMARY

The discussion focuses on solving the differential equation y'' + 2xy' + 2y = 0 using the power series method. The user initiates the solution by expressing y(x) as a power series: y(x) = a0 + a1x + a2x^2 + ... + anx^n. The next steps involve calculating the derivatives y'(x) and y''(x) and equating the coefficients of like terms with the original equation. The use of LaTeX for clarity in presenting the power series is recommended for better communication of the mathematical expressions.

PREREQUISITES
  • Understanding of power series expansions
  • Familiarity with differential equations
  • Proficiency in calculating derivatives
  • Basic knowledge of LaTeX for mathematical notation
NEXT STEPS
  • Practice solving second-order linear differential equations using power series methods
  • Learn how to derive coefficients in power series solutions
  • Explore the use of LaTeX for formatting mathematical expressions
  • Study the convergence of power series in the context of differential equations
USEFUL FOR

Students studying differential equations, mathematicians interested in series solutions, and educators teaching power series methods in calculus or advanced mathematics courses.

Fairy111
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Homework Statement



Use the power series method to find the general solution to:

y'' + 2xy' + 2y = 0

Homework Equations





The Attempt at a Solution



I let y(x)=a0 + a1x + a2x^2 +...+anx^n + ...

Then i found out what y'(x) and y''(x) was. I then equated the constant terms with the original eqn and tried to then do the same with the linear terms. I am not really sure what I am doing though and how to continue.
 
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Why don't you show what you've got.

It will probably be easiest if you use LaTeX to write the sums...For example, If you write:

[$tex] y(x)=\sum_{n=0}^{\infty} a_n x^n[$/tex]

And delete the $ signs , you get this:

y(x) =\sum_{n=0}^{\infty} a_n x^n
 

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