Math Problem Statement
limite en + infini de (racine carrée de 9x^2-x+1)-3x
Solution
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Math Problem Analysis
Mathematical Concepts
Limits
Asymptotic Expansion
Radical Expressions
Formulas
lim_{x \to +\infty} \left( \sqrt{9x^2 - x + 1} - 3x \right)
\sqrt{x^2 \left(9 - \frac{1}{x} + \frac{1}{x^2}\right)} = x \sqrt{9 - \frac{1}{x} + \frac{1}{x^2}}
Asymptotic expansion: \sqrt{9 - \frac{1}{x} + \frac{1}{x^2}} \approx 3 - \frac{1}{6x}
Theorems
Asymptotic Expansion for large x
Limit laws
Suitable Grade Level
Grade 12 - College
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