Solve Maclaurin Series for f(x)= 1/(1+x+X2)

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SUMMARY

The discussion centers on finding the Maclaurin series for the function f(x) = 1/(1+x+x^2). The correct approach involves using polynomial division to divide 1 by the series expansion of (1+x+x^2), rather than simply applying the Maclaurin series directly. The accurate result from the polynomial division method is confirmed to be different from the initial derivative-based attempt, which yielded f(x) = 1 - x + x^3. The consensus is that the polynomial division method is the appropriate technique to derive the series.

PREREQUISITES
  • Understanding of Maclaurin series expansion
  • Familiarity with polynomial division
  • Knowledge of derivatives and their applications in series
  • Basic algebraic manipulation skills
NEXT STEPS
  • Study polynomial division techniques in detail
  • Learn how to derive Maclaurin series for various functions
  • Explore the convergence properties of power series
  • Practice finding series expansions for rational functions
USEFUL FOR

Students studying calculus, particularly those focusing on series expansions, as well as educators looking for clear examples of polynomial division and Maclaurin series applications.

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Homework Statement


Find the Maclaurin series for f(x)= 1/ (1+x+X2)


Homework Equations





The Attempt at a Solution



I think the book says I can just divide 1 by the Maclaurin series of (1+x+X2). And when i do this the original function is the answer (which makes sense).

But when I do it my finding the derivatives of f(x) and then using the formula I get f(x) = 1-x+x3.

So I was wondering if
1) Which way is correct
2) is the second one accurate.

Thanks
-James
 
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The second way is accurate. The first way would be as well if you do what they want you to. You are supposed to divide 1 by 1+x+x^2 using polynomial division. The result is NOT 1+x+x^2.
 

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