How to Solve Integrals with a Linear Denominator?

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SUMMARY

The discussion focuses on solving the integral ∫ x/(4-x) dx. A key insight provided is the technique of manipulating the numerator by adding and subtracting 4, leading to the expression ∫ 4/(4-x) dx - ∫ 1 dx. This method simplifies the integral into manageable parts, allowing for easier evaluation. Participants emphasize the importance of recognizing the structure of the integrand to apply appropriate integration techniques.

PREREQUISITES
  • Understanding of basic integral calculus
  • Familiarity with integration techniques involving logarithms
  • Knowledge of algebraic manipulation of expressions
  • Experience with definite and indefinite integrals
NEXT STEPS
  • Study the method of integration by substitution
  • Learn about partial fraction decomposition for rational functions
  • Explore the properties of logarithmic integration
  • Practice solving integrals with linear denominators
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Students and educators in calculus, mathematicians looking to refine their integration skills, and anyone interested in advanced techniques for solving integrals involving rational functions.

briton
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quite simple but need some help:

∫ x/(4-x) dx.


when there's ∫f'(x)/f(x) you can use natural log but what about this


full workings or some tips anyone?


Thanks.
 
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Hint: Add to the numerator 0=4-4
 
erm so you get
∫ 4/(4-x) dx - ∫1 dx ?
 
That was the idea, yes.
 
cheers!






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