How Do You Differentiate an Integral with Variable Limits and Parameters?

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SUMMARY

The discussion focuses on differentiating the function defined by the integral \( f(x) = \int_{x^2}^{3x} \sqrt{t^3 + x^3} dt \). The key method to solve this problem is the application of the Leibniz integral rule, which allows for differentiation of integrals with variable limits and parameters. The user expresses uncertainty about using the Fundamental Theorem of Calculus (FTC) due to the presence of the variable \( x \) in the integrand, highlighting the necessity of understanding the Leibniz rule for such cases.

PREREQUISITES
  • Understanding of the Fundamental Theorem of Calculus (FTC)
  • Familiarity with the Leibniz integral rule
  • Basic knowledge of differentiation techniques
  • Concept of variable limits in integrals
NEXT STEPS
  • Study the Leibniz integral rule in detail
  • Practice differentiating integrals with variable limits
  • Explore examples of integrals involving parameters
  • Review applications of the Fundamental Theorem of Calculus
USEFUL FOR

Students studying calculus, educators teaching integral calculus, and anyone seeking to master differentiation techniques involving variable limits and parameters.

JG89
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Homework Statement



If f(x) = \int_{x^2}^{3x} \sqrt{t^3 + x^3} dt then find the expression for f'(x)

Homework Equations


The Attempt at a Solution



Usually I would use the FTC, but since there the variable x occurs in the integrand, I don't know how to differentiate this. Any help?
 
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