U Substitution: Solving Definite Integral of [(x^2sinx)/(1+x^6)]*dx

Click For Summary
SUMMARY

The forum discussion focuses on solving the definite integral of the function \(\frac{x^2 \sin x}{1 + x^6}\) over the interval \([-π/2, π/2]\). A user suggests using \(u = 1 + x^6\) for substitution but expresses uncertainty due to the lack of an elementary integral for this function. The conversation emphasizes the importance of graphical analysis to demonstrate that the integral evaluates to zero without direct computation.

PREREQUISITES
  • Understanding of definite integrals and their properties
  • Familiarity with substitution methods in calculus
  • Basic knowledge of trigonometric functions, specifically sine
  • Graphical interpretation of functions and integrals
NEXT STEPS
  • Research techniques for evaluating definite integrals using substitution
  • Study the properties of odd and even functions in relation to integrals
  • Learn about graphical methods for analyzing integrals
  • Explore advanced integration techniques, including numerical methods for non-elementary integrals
USEFUL FOR

Students and educators in calculus, mathematicians interested in integral calculus, and anyone seeking to deepen their understanding of substitution methods in definite integrals.

jennie312
Messages
1
Reaction score
0
The problem: The definite integral of [(x^2sinx)/(1+x^6)]*dx on the interval -∏/2 ≤ x ≤ ∏/2


I need help figuring out what the u should be for substitution.

I've been trying to make the (1+x^6) my u, but I don't know if this is what I should be doing.
 
Physics news on Phys.org
There's no elementary integral for that. Can you think of some way to show it's zero without doing the integral? Try thinking about what a graph would look like.
 
Last edited:

Similar threads

  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 44 ·
2
Replies
44
Views
6K
Replies
3
Views
2K
  • · Replies 22 ·
Replies
22
Views
3K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K