Solve Integral 17(sin(x))^3(cos(x))^9

  • Thread starter Thread starter rubecuber
  • Start date Start date
  • Tags Tags
    Error Integration
Click For Summary
SUMMARY

The integral of 17(sin(x))^3(cos(x))^9 requires a substitution for cos(x) to simplify the expression. The initial attempt at solving the integral resulted in (-17(5sin(x))^2 +1)(cos(x))^10)/60, which was incorrect. By substituting cos(x) and adjusting the integration variable, one sine term can be eliminated, leading to a more straightforward solution. This method is essential for correctly solving integrals involving products of sine and cosine functions.

PREREQUISITES
  • Understanding of integral calculus
  • Familiarity with trigonometric identities
  • Knowledge of substitution methods in integration
  • Experience with manipulating algebraic expressions
NEXT STEPS
  • Study substitution techniques in integral calculus
  • Learn about trigonometric integrals and their simplifications
  • Explore the use of integration by parts for complex integrals
  • Practice solving integrals involving products of sine and cosine functions
USEFUL FOR

Students studying calculus, particularly those focused on integral calculus, as well as educators looking for examples of trigonometric integrals and substitution methods.

rubecuber
Messages
46
Reaction score
0

Homework Statement



Integral 17(sin(x))^3(cos(x))^9

http://www.mediafire.com/imageview.php?quickkey=55l9ediwdqxsg4f&thumb=4



Homework Equations


Integration


The Attempt at a Solution


I get (-17(5sin(x))^2 +1)(cos(x))^10)/60. But I'm wrong. It says I need to change something but I don't know what.
 
Last edited by a moderator:
Physics news on Phys.org
substitute for cosx. then you will see that one of the sinx goes out with the change of integration variable. then you should be able to solve it easily
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 11 ·
Replies
11
Views
2K
Replies
7
Views
2K
  • · Replies 27 ·
Replies
27
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 9 ·
Replies
9
Views
1K
  • · Replies 11 ·
Replies
11
Views
2K
Replies
9
Views
2K
Replies
3
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K