How can I simplify this complex integral involving a square root and fractions?

  • Thread starter Thread starter mamou6262
  • Start date Start date
Click For Summary
SUMMARY

The discussion centers on simplifying the integral \int \frac{1}{ x^2 \times \sqrt{a + bx^2 + \frac{c}{x^2}}} \,dx. The user attempts a substitution with r=x^2 but seeks a final form of \int \frac{1}{ \sqrt{d + ey + fy^2 }} \,dy. A suggested substitution is s = x^2, leading to ds = 2x, which aids in transforming the integral into the desired format.

PREREQUISITES
  • Understanding of integral calculus and substitution methods
  • Familiarity with algebraic manipulation of square roots and fractions
  • Knowledge of differential calculus, specifically derivatives and differentials
  • Experience with integral forms and their transformations
NEXT STEPS
  • Study the method of substitution in integral calculus
  • Learn about simplifying integrals involving square roots
  • Explore advanced techniques for integrating rational functions
  • Investigate the use of differential equations in integral transformations
USEFUL FOR

Students and educators in mathematics, particularly those focusing on calculus and integral simplification techniques.

mamou6262
Messages
2
Reaction score
0

Homework Statement



Hello,
I have an equation which I am having to simplify.
<br /> \int \frac{1}{ x^2 \times \sqrt{a + bx^2 + \frac{c}{x^2}}} \,dx<br />

2. The attempt at a solution
I've tried expanding the terms in the brackets and using a substitution of [ tex ] \[r=x^2\][ /tex ] but I need the answer in a form which is
<br /> \int \frac{1}{ \sqrt{d + ey + fy^2 }} \,dy<br />
Thanks
 
Physics news on Phys.org
If I said:

\frac{1}{x^2 \sqrt{a+bx^2+\frac{c}{x^2}}} = \frac{1}{x \sqrt{ax^2+bx^4+c}}

Do you know how I got from one to the other?

There is a substitution you can use to get it in terms of y.
 
If you take
s = x^2.
Then,
ds = 2x
and replace in the substitution of JesseC right hand side.
Hope that helps.
 

Similar threads

  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 21 ·
Replies
21
Views
2K
Replies
3
Views
2K
  • · Replies 5 ·
Replies
5
Views
936
  • · Replies 14 ·
Replies
14
Views
2K
Replies
1
Views
2K
  • · Replies 12 ·
Replies
12
Views
3K
  • · Replies 105 ·
4
Replies
105
Views
8K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K