First order separable differential 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
 
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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