Solving \int tan^{4}(x)dx Without a Table

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SUMMARY

The discussion focuses on solving the integral \(\int \tan^{4}(x)dx\) using u-substitution without relying on integral tables. The key identity utilized is \(1 + \tan^2(x) = \sec^2(x)\), which allows for a transformation of the integral. Participants suggest rewriting \(\tan^{4}(x)\) in terms of \(\sec(x)\) to facilitate the integration process. This method effectively simplifies the integral into a solvable form.

PREREQUISITES
  • Understanding of u-substitution in calculus
  • Familiarity with trigonometric identities, specifically \(1 + \tan^2(x) = \sec^2(x)\)
  • Knowledge of basic integral calculus
  • Ability to manipulate trigonometric functions
NEXT STEPS
  • Practice solving integrals using u-substitution techniques
  • Explore the derivation and application of trigonometric identities in integration
  • Learn about advanced integration techniques, including integration by parts
  • Study the properties and applications of secant and tangent functions in calculus
USEFUL FOR

Students and educators in calculus, mathematicians focusing on integration techniques, and anyone looking to deepen their understanding of trigonometric integrals.

TromboneNerd
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how can i use u substitution to solve [tex]\int tan^{4}(x)dx[/tex]?

I am not allowed to use a table, so i can't use the [tex]\int tan^{n}(u)du[/tex] formula. I have no work since i can't even make it fit [tex]\int udu[/tex]. help?
 
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Use the identity [itex]1+\tan^2x=\sec^2x[/itex].
 

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