First order separable differential equation

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Homework Help Overview

The discussion revolves around a first-order separable differential equation involving the relationship between the variables y and x, specifically in the form dy/dx + x² = x. Participants are exploring the integration process required to solve the equation.

Discussion Character

  • Exploratory, Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • Participants discuss rearranging the equation and express uncertainty regarding the integration process. There are mentions of u-substitution and partial fraction decomposition as potential strategies. Clarifications about variable notation and the correct form of the equation are also raised.

Discussion Status

The discussion has seen some progress, with participants correcting variable notation and recognizing the need for integration. There is a mix of interpretations regarding the necessity of partial fractions, and some participants have offered guidance on how to approach the integration.

Contextual Notes

There are indications of confusion regarding variable representation, specifically between y, x, and t, which may affect the clarity of the problem setup. Participants are navigating these inconsistencies while attempting to solve the equation.

amolv06
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Homework Statement



\frac{dy}{dx} + x^{2} = x

Homework Equations



Above.

The Attempt at a Solution

After rearranging, I am stuck at

\int \frac{1}{x-x^{2}} dx = \int dt

I can't think of any u-substitution, or any other trick for integrals I could use to solve this.
 
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Recheck you're expressions. The problem you give involves x and y, while the attempt at a solution gives x and t. Please clarify.

It looks like you should have dx/dt where you currently have dy/dx no? If that's the case consider a partial fraction decomposition.
 
I wrote the wrong variable for the last integral. It should have been of dy rather than dt. I solved it. I forgot about partial fractions.
 
Even so, dy/dx= x- x^2 becomes dy= (x- x^2)dx. There is no need for partial fractions.
 
What need to find if y, then
y=\int(x-x^2)dx=\frac{x^2}{2}-\frac{x^3}{3}+C
 

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