Integrating (x-5)/√(x-6) with u-Substitution

  • Thread starter tasveerk
  • Start date
  • Tags
    Integrating
In summary, u-Substitution is a technique used in integration to simplify a given expression by replacing a complicated expression with a simpler one. It is used in the integration of (x-5)/√(x-6) by replacing x with a simpler expression u. The u-value is usually chosen to be the inner function of a composite function, in this case, u = x-5. The general process for integration using u-Substitution involves identifying u, differentiating to find du, replacing x with u, integrating in terms of u, and finally substituting back in u with x. U-Substitution cannot be used for all integration problems, but it is the most efficient method for (x-5)/
  • #1
tasveerk
24
0

Homework Statement


Solve with u-substitution
∫ (x-5)/√(x-6) dx

Homework Equations





The Attempt at a Solution


This is what I have done so far and it doesn't seem to work out. I have a feeling I'm missing something. Any help would be appreciated.
u=x-6
du=dx
x=u+6
∫ (u+6-5)(u^(-1/2) du
∫ u^(1/2) + u^(-1/2) du
 
Physics news on Phys.org
  • #2


You were doing just fine until your nerve failed. What's the integral of u^(1/2)du and u^(-1/2)du?
 

FAQ: Integrating (x-5)/√(x-6) with u-Substitution

What is u-Substitution and why is it used in integrating (x-5)/√(x-6)?

U-Substitution is a technique used in integration to simplify a given expression by replacing a complicated expression with a simpler one. In the case of (x-5)/√(x-6), u-Substitution is used to replace the variable x with a simpler expression u, making the integration process easier.

How do you choose the u-value when using u-Substitution for (x-5)/√(x-6)?

The u-value is usually chosen to be the inner function of a composite function. In this case, the expression (x-5) is inside the square root function, so we let u = x-5.

3. What is the general process for integrating (x-5)/√(x-6) using u-Substitution?

The general process for integrating using u-Substitution is as follows:

  1. Identify the variable u by looking for a composite function.
  2. Differentiate u to find du.
  3. Replace all instances of x with u in the given expression.
  4. Integrate the new expression in terms of u.
  5. Replace u with the original expression in terms of x.

4. Can we use u-Substitution for all integration problems?

No, u-Substitution is a powerful technique, but it can only be used for certain types of integrals. It is most commonly used for integrals involving composite functions, such as (x-5)/√(x-6).

5. Are there any other techniques for integrating (x-5)/√(x-6) besides u-Substitution?

Yes, there are other techniques such as integration by parts, trigonometric substitutions, and partial fractions. However, u-Substitution is the most efficient method for integrating (x-5)/√(x-6) as it simplifies the expression and makes the integration process easier.

Similar threads

Replies
12
Views
1K
Replies
4
Views
1K
Replies
27
Views
2K
Replies
11
Views
1K
Replies
15
Views
1K
Replies
3
Views
1K
Replies
3
Views
2K
Back
Top