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Mathematics 24 Online
OpenStudy (asylum15):

- First order differential using integrating factor...

OpenStudy (asylum15):

\[x^5 . \frac{ dy }{ dx } = 2 - x^4.y\]

OpenStudy (asylum15):

Hi guys/gals :) I need to isolate dy/dx in the beginning, struggling to figure out how?

myininaya (myininaya):

Put this into y'+qy=q form. If not in this form, then arrange so it is. If you are trying to solve this using the integrating factor, I suggest putting it in the form I wrote here.

OpenStudy (asylum15):

dy/dx + P(X)Y = F(X) ?

myininaya (myininaya):

Yep!

myininaya (myininaya):

Oops I used q twice. lol.

OpenStudy (asylum15):

How would you isolate dy/dx tho? My initial reaction was to swap x^5 and x^4y around?

myininaya (myininaya):

If that is what you want to do, then divide both sides by x^6

OpenStudy (asylum15):

Not multiply by x^5?

OpenStudy (asylum15):

*Sorry for my confusion lol*

myininaya (myininaya):

well y' is being multiplied by x^6...To undo multiplication of x^6 you divide by x^6. Whatever you do to one side, do to the other though

OpenStudy (asylum15):

Oooh, the x on the left is x^5 not x^6 :D

myininaya (myininaya):

I think the latex is messed on my computer. It shows x^6 but when I click on the code it shows x^5. It made my z's and x's look the same the other day... errr So yeah x^5.

OpenStudy (asylum15):

So:\[\frac{ dy }{ dx } = 2x^5 -x.y ?\]

myininaya (myininaya):

Did you divide both sides by x^5? looks like you failed a little on that.

myininaya (myininaya):

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