# Homework Help: Any one solve this eq. please ?

1. Aug 20, 2008

### abuder3

any one solve this eq. please ????

hi all
any one solve for me this eq.

y(2xy+ex)dx-exdy=0 y(0)=2

Last edited: Aug 20, 2008
2. Aug 20, 2008

### tiny-tim

Welcome to PF!

Hi abuder3! Welcome to PF!
ah … that's not the way this forum works.

First show us what work you've done …

which category do you think this comes in?

have you seen anything similar?

what have you tried?

3. Aug 20, 2008

### abuder3

Re: any one solve this eq. please ????

4. Aug 20, 2008

### NoMoreExams

Re: any one solve this eq. please ????

Classic.

5. Aug 20, 2008

### Defennder

Re: any one solve this eq. please ????

Write it out in the form dy/dx + ... = ..., rearrange the terms and you should be able to get a recognisable DE.

6. Aug 21, 2008

### abuder3

Re: any one solve this eq. please ????

I cant get any solutions

7. Aug 21, 2008

### abuder3

Re: any one solve this eq. please ????

8. Aug 21, 2008

### Eidos

Re: any one solve this eq. please ????

If you click on the "Go advanced" button at the bottom of your reply box it will present you with a number of options to add extra content into your replies.

There is a "$$\sum$$" button which you can click on to add mathematics in LaTeX format. Its very useful when trying to communicate ideas to other as ASCII is insufficient for communicating mathematics.

Good luck

9. Aug 21, 2008

### tiny-tim

Show us what work you've done

which category do you think this comes in?

have you seen anything similar?

what have you tried?

10. Aug 21, 2008

### abuder3

Re: any one solve this eq. please ????

thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

11. Aug 21, 2008

### Marin

Re: any one solve this eq. please ????

Hi there!

It's an interesting DE! To be honest I don't have any idea how to solve it too :(

$$y(2xy+e^x)dx=e^xdy$$

$$\frac{dy}{dx}=\frac{2xy^2+ye^x}{e^x}$$

$$\frac{dy}{dx}-y=\frac{2xy^2}{e^x}$$

Now, as I stare at it I see it's not linear and it's not homogeneous. It also cannot be solved by separation of variables.., quadrature does not work here. The 2nd power of y reminds me of the Bernoulli equation.. hmmmmm

12. Aug 23, 2008

### coomast

Re: any one solve this eq. please ????

The latter is correct, consider Bernoulli....