Can Someone Explain the Move of Limit of a Function in Detail?

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SUMMARY

The discussion focuses on the mathematical concept of limits, specifically the limit of a function involving the expression \(\sqrt{x^2 + \frac{1}{n}} - x\). A key suggestion is to simplify this expression by multiplying both the numerator and denominator by the conjugate of \(\sqrt{x^2 + \frac{1}{n}} - x\). This technique is essential for resolving indeterminate forms and clarifying the behavior of the function as \(n\) approaches infinity.

PREREQUISITES
  • Understanding of limits in calculus
  • Familiarity with algebraic manipulation techniques
  • Knowledge of conjugates in mathematical expressions
  • Basic proficiency in handling square roots and rational expressions
NEXT STEPS
  • Study the concept of limits in calculus, focusing on indeterminate forms
  • Learn about the properties and applications of conjugates in algebra
  • Explore techniques for simplifying expressions involving square roots
  • Practice solving limit problems using the epsilon-delta definition
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Students studying calculus, particularly those struggling with limits and algebraic manipulation, as well as educators looking for effective teaching strategies in explaining limits of functions.

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Homework Statement



i added a photo of a move of limit of function.
can anyone please explain this move ? step by step.. i can't understand it
thanks in advance !


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The Attempt at a Solution

 

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Do you know what a conjugate is? Try multiplying the numerator and denominator by the conjugate of \sqrt{x^2 + \frac{1}{n}} - x.
 
thanks !
 

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