Trouble evaluating the integral for a rational function

Click For Summary
SUMMARY

The integral evaluation for the rational function f(x) = (10x + 2)/((x - 5)(x^2 + 1)) can be approached using partial fraction decomposition. The correct form is A/(x - 5) + (Bx + C)/(x^2 + 1). By equating the numerators, A(x^2 + 1) + (Bx + C)(x - 5) = 10x + 2, one can solve for the constants A, B, and C. Substituting specific values for x, such as x = 5, simplifies the process of determining these constants.

PREREQUISITES
  • Understanding of partial fraction decomposition
  • Familiarity with polynomial long division
  • Basic algebraic manipulation skills
  • Knowledge of rational functions and their properties
NEXT STEPS
  • Practice solving integrals using partial fraction decomposition
  • Review polynomial long division techniques
  • Explore the properties of rational functions
  • Learn about the application of integrals in calculus
USEFUL FOR

Students studying calculus, particularly those focusing on integral evaluation and rational functions, as well as educators seeking to enhance their teaching methods in this area.

uwludd
Messages
1
Reaction score
0

Homework Statement


i've tried many partial fraction methods but none of y answers are correct in the end, please help me evaluate the integral for f(x)= (10x+2)/(x-5)(x^2 + 1)


Homework Equations



there are no relevant equations given

The Attempt at a Solution



A/x-5 + Bx+C/x^2 +1
 
Physics news on Phys.org
So now you have

[tex]\frac{A(x^2+1)+(Bx+C)(x-5)}{(x-5)(x^2+1)}= \frac{10x+2}{(x-5)(x^2+1)}[/tex]


So equating the numerators

A(x^2+1)+(Bx+C)(x-5)= 10x+2 for all values of x.

Try putting suitable values of x which will eliminate most of the constants. For example, x=5 will help you get A.
 

Similar threads

Replies
2
Views
1K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 19 ·
Replies
19
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
Replies
10
Views
2K
  • · Replies 18 ·
Replies
18
Views
3K