How to Evaluate ∫ sec^2(x)/√(tanx) Using U-Substitution?

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SUMMARY

The integral ∫ sec²(x)/√(tan(x)) dx can be evaluated using the substitution u = tan(x). This leads to the differential du = sec²(x) dx, simplifying the integral to ∫ 1/√u du. The correct evaluation results in 2√u + C, which translates back to 2√(tan(x)) + C. Careful selection of the substitution variable is crucial for accurate results.

PREREQUISITES
  • Understanding of u-substitution in integral calculus
  • Familiarity with trigonometric identities and functions
  • Knowledge of indefinite integrals
  • Ability to manipulate algebraic expressions
NEXT STEPS
  • Practice additional u-substitution problems in integral calculus
  • Explore trigonometric integrals involving secant and tangent functions
  • Review the properties of indefinite integrals and their evaluations
  • Learn about common mistakes in u-substitution and how to avoid them
USEFUL FOR

Students studying calculus, particularly those focusing on integral techniques, and educators seeking to enhance their teaching methods for trigonometric integrals.

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Homework Statement



Evaluate the indefinite integral: sec^2(x)/√(tanx)

Homework Equations





The Attempt at a Solution



When I tried this, I got -csc/(2/3)(secxtanx)^(3/2)+C
 
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That is not correct. Can you show me the steps of how you did this?
 
Yup, that doesn't sound right.

Be careful when you're picking u for a u-substitution...
 

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