Conquering the Infinity Limit: Integrals and Exponential Functions

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SUMMARY

The discussion focuses on evaluating the limit of the expression lim_{x\rightarrow + ∞} \frac{\int^{x^3}_{0} e^{t^2}dt}{x \int^{x^2}_{0} e^{t^2}dt}. Participants suggest using L'Hôpital's Rule and the Fundamental Theorem of Calculus to differentiate the integrals involved. They emphasize the importance of applying the Chain Rule (Leibniz's Rule) due to the variable bounds of the integrals. The goal is to simplify the resulting expression, referred to as ##L##, and determine its behavior as x approaches infinity.

PREREQUISITES
  • Understanding of L'Hôpital's Rule
  • Familiarity with the Fundamental Theorem of Calculus
  • Knowledge of Chain Rule (Leibniz's Rule) for differentiating integrals
  • Basic concepts of limits in calculus
NEXT STEPS
  • Study advanced applications of L'Hôpital's Rule in calculus
  • Explore the Fundamental Theorem of Calculus in depth
  • Learn about Leibniz's Rule for differentiating under the integral sign
  • Investigate techniques for evaluating limits involving exponential functions
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Students and educators in calculus, mathematicians focusing on limits and integrals, and anyone seeking to deepen their understanding of exponential functions in mathematical analysis.

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[itex]lim_{x\rightarrow + ∞} \frac{\int^{x^3}_{0} e^{t^2}dt}{x \int^{x^2}_{0} e^{t^2}dt}[/itex]


Attempt at a solution: I don't really know where to start. Any hints?
 
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L' Hopital's Rule. Product Rule for the denominator. Fundamental Theorem of Calculus to differentiate the integrals. Don't forget that the bounds are functions of ##x##, so apply Chain Rule (Leibniz's Rule).

After the first step, you'll end up with an expression that I'll call ##L##. Find and simplify ##L^{-1}## with a further application of all those rules. Then deduce what ##L## should be at the limit.
 
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Thanks. When I get home I'll get to work.
 

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