Efficient Methods for Solving Integrals with Trigonometric Substitution

  • Thread starter Thread starter soe236
  • Start date Start date
  • Tags Tags
    Integral
Click For Summary
SUMMARY

The discussion focuses on solving the integrals of the forms integral(e^(2x)/sqrt(e^(2x)+1))dx and integral(e^(x)/sqrt(e^(2x)+1))dx using trigonometric substitution. A participant suggests substituting u=e^x and applying the identity for sqrt(u^2+1) with x=tan(theta), leading to the differential d(theta)=sec^2(theta). The conversation emphasizes the transformation t^2=e^(2x)+1, which simplifies the integral further, allowing for a clearer path to the solution.

PREREQUISITES
  • Understanding of integral calculus and techniques for solving integrals
  • Familiarity with trigonometric identities and substitutions
  • Knowledge of exponential functions and their properties
  • Proficiency in manipulating differential equations
NEXT STEPS
  • Explore advanced techniques in trigonometric substitution for integrals
  • Study the properties of exponential functions in calculus
  • Learn about the application of differential equations in integral calculus
  • Practice solving integrals involving hyperbolic functions and their relationships to trigonometric functions
USEFUL FOR

Students and professionals in mathematics, particularly those focusing on calculus, integral solving techniques, and trigonometric applications in mathematical analysis.

soe236
Messages
22
Reaction score
0
1. integral(e^(2x)/\sqrt{}(e^2^x+1))dx and integral(e^(x)/\sqrt{}(e^2^x+1))dx







3. I tried solvign by letting u=e^x and used trig substitution for \sqrt{}u^2+1 where x=tan(theta), d(theta)=sec^2(theta), \sqrt{}u^2+1=sec(theta) but got stuck
 
Physics news on Phys.org
\int\frac{e^{2x}}{\sqrt(e^{2x}+1)}dx letting

t^{2}=e^{2x}+1=>2tdt=2e^{2x}dx=>tdt=e^{2x}dx,
I think you can go from here, right? Similarly try the other, and show a little more work please!
 

Similar threads

  • · Replies 22 ·
Replies
22
Views
3K
  • · Replies 5 ·
Replies
5
Views
3K
Replies
2
Views
2K
  • · Replies 105 ·
4
Replies
105
Views
11K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 14 ·
Replies
14
Views
2K
Replies
4
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K