Differential equation (cannot separate)

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Homework Help Overview

The discussion revolves around solving a differential equation involving a substitution of variables. The original poster attempts to solve for y using the substitution z = 1/(y^5) in the equation dy/dx + y/x = (y^6)(x^3).

Discussion Character

  • Exploratory, Problem interpretation, Assumption checking

Approaches and Questions Raised

  • Participants discuss the difficulty in separating variables for integration and explore the rearrangement of the equation into a different format. Some express unfamiliarity with the method being used and seek guidance on how to proceed.

Discussion Status

There is an ongoing exploration of different approaches to the problem, including the suggestion of finding an integrating factor. Participants are actively engaging with each other's contributions, but no consensus has been reached on a specific method or solution.

Contextual Notes

Some participants question whether the original poster has only encountered separable differential equations in their studies, indicating a potential gap in familiarity with other types of equations.

Name15
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Homework Statement


Solve for y using the substitution: z = 1/(y^5)
dy/dx + y/x = (y^6)(x^3)

Homework Equations


(dz/dx) = (dz/dy) x (dy/dx)

The Attempt at a Solution



I formed an equation for dz/dx but cannot separate the variables in order to integrate. Can someone tell me where I've gone wrong please.
 

Attachments

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If you rearrange your second to last step you have z' + P(x)z = Q(x).
Is all you've done in class is separable diff eq.'s?
 
oh, I am unfamiliar with this format. Would you mind nudging me in the right direction please?
 
Name15 said:
oh, I am unfamiliar with this format. Would you mind nudging me in the right direction please?
Find an integrating factor that you can use to multiply both sides of the equation. After multiplication, the left side of the equation should look like the product rule has been used on some function.
 

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