Integrating x(e^x): Step-by-Step Guide

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SUMMARY

The integral of x(e^x) can be solved using integration by parts, a technique derived from the Product Rule of differentiation. The formula for integration by parts is given by ∫u dv = uv - ∫v du. In this case, u is chosen as x and dv as e^x dx, leading to the solution of the integral through systematic application of this formula.

PREREQUISITES
  • Understanding of integration by parts
  • Familiarity with the Product Rule of differentiation
  • Basic knowledge of exponential functions, specifically e^x
  • Ability to perform definite and indefinite integrals
NEXT STEPS
  • Practice additional integration by parts problems
  • Study the Product Rule and its applications in calculus
  • Explore advanced techniques for integrating exponential functions
  • Review the properties of the exponential function e^x
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Students preparing for calculus exams, educators teaching integration techniques, and anyone looking to strengthen their understanding of integration methods in mathematics.

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Homework Statement


What is the integral of x(e^x)?


The Attempt at a Solution


It's part of a larger question. I've got a midterm tomorrow and just realized I don't know the principles of integrating e^x other than that the integral of e^x is e^x. I've scoured my textbook and cannot find it. Could anyone provide insight?
 
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What you're looking for is integration by parts, which can be proven from the Product Rule. If

[tex]d(uv) = v du + u dv[/tex]

Then subtract v du and integrate:

[tex]\int u dv = \int d(uv) - \int v du = uv - \int v du[/tex]
 

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