- #1

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**3x**

^{2}ydx+(x^{3}+2y)dy=0I tried to change of variable y=v*x, but I still cannot find a way to solve it.

the second is:

**(e**

^{x}sin(y)-2ysin(x))dx+(e^{x}cos(y)+2cos(x))dx=0here I have no idea

thank you

B

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- Thread starter brad sue
- Start date

- #1

- 281

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I tried to change of variable y=v*x, but I still cannot find a way to solve it.

the second is:

here I have no idea

thank you

B

- #2

quasar987

Science Advisor

Homework Helper

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They are **exact **diff equ. Have you not seen how to solve such ode's?

- #3

Hurkyl

Staff Emeritus

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Surely you know other techniques for solving ODE? This problem is tailor-made for one of them.

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