Simple Substitution for Solving Inigral of U^-1/2

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Homework Help Overview

The discussion revolves around a calculus problem involving the integral of a function that includes a substitution method. The original poster is attempting to transform the integral into a specific form using the substitution \( u = 1 + x^2 \).

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster expresses confusion about how to manipulate the integral to achieve the form \( u^{-1/2} \) after making the substitution. They specifically mention uncertainty regarding the numerator in the integral.
  • Some participants discuss the relationship between different forms of expressions, such as \( 1/u^{1/2} \) and \( u^{-1/2} \), and how to express fractions in alternative ways.
  • There are questions about how to simplify the numerator in the context of the substitution.

Discussion Status

The discussion is ongoing, with participants exploring various aspects of the substitution method and its implications for the integral. Some guidance has been offered regarding the manipulation of fractions, but there is no explicit consensus on the approach to take.

Contextual Notes

Participants are working within the constraints of a homework assignment, which may limit the information they can share or the methods they can use. The original poster's confusion about the substitution process highlights potential gaps in understanding the transformation of integrals.

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Homework Statement


http://i.imgur.com/d0EKw.png
Initigral (x* dx/((1+x^2)^.5)

substitution
u = 1+x^2
du = 2xdx


how do get this to equal the inigral of U^-1/2

I am drawing a blank for the numerator

I know how do the problem after I get u^-1/2 .. but i need to know how to get the intigral to form of U^-1/2.. i don't know how to use substition to get to that form
 
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what is the answer of 1/(4^2)? 0.0625
now check what is the answer for 4^(-2)? This should give you some direction...
1/(U^0.5) can then be written how?
 
Yes, i know 1/u^1/2 = U^-1/2

But how does the numerator = 1
 
if you have anything above the line you can make the numerator 1 and right it next to it. Like 4/6 can be written as 4*(1/6) its the same. Just show me your calcs, and I'll help you.
 

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