How can I use integration by substitution to solve this equation?

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SUMMARY

The discussion focuses on using integration by substitution to solve a specific equation involving the substitution \( u = 1 + \mu^2 \). The participant clarifies that the differential \( du \) equals \( 2\mu d\mu \), which leads to the factor of \( \frac{1}{2} \) when rearranging for \( \mu d\mu \). This understanding resolves the confusion regarding the multiplication by \( \frac{1}{2} \) in the integration process. The participant expresses satisfaction upon grasping the concept after receiving assistance.

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  • Familiarity with differential calculus and the manipulation of differentials.
  • Knowledge of algebraic expressions and their transformations.
  • Basic understanding of the concept of substitution in calculus.
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  • Study the method of integration by substitution in detail.
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  • Explore the relationship between differentials and integrals in calculus.
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Students studying calculus, particularly those struggling with integration techniques, and educators looking for clear explanations of substitution methods in solving integrals.

Zamael88
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Homework Statement



http://img20.imageshack.us/img20/112/41590752.jpg

Homework Equations





The Attempt at a Solution



I have no idea how to convert the left equation into the right one.

Could someone show me how to do that?

I don't understand why the right equation should be multiplied by 1/2

It is really giving me a headache.

Thanks for reading this post.
 
Last edited by a moderator:
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substitute [tex]u=1 + \mu^2[/tex] therefore [tex]du=2 \mu d \mu[/tex] the half comes in because you have to solve for [tex]\mu d \mu[/tex] which is in the numerator, it becomes [tex]\frac{1}{2}du= \mu dx[/tex]

since this the HW forum you should be able to see the rest.
 
Thank you. Now I understand. :)
 

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