differential equations
exact equations problem help
we tried on this site for 2 hours yesterday and got no where! please help!

Question

differential equations 
exact equations problem help 
we tried on this site for 2 hours yesterday and got no where! please help!

anonymous · Answer

$$M=(ye^{xy}-1/y)$$

partial derivative 
$$\delta M / \delta y=1/y^2$$
my question is what happens to the ye^xy can someone explain how it becomes 0?

anonymous · Answer

I know how the 1/y^2 comes that is just the derivative. but the e is killing me!

anonymous · Answer

Doesn't seem right to me though.

anonymous · Answer

http://www.wolframalpha.com/input/?i=%28ye%5E%28xy%29-%281%2Fy%29%29%27

anonymous · Answer

wow ok lol

anonymous · Answer

it's what I get too, but I try to double check it again, I was a bit lazy to be honest and asked the wolf first before computing it on my own, give me 2-3 minutes.

anonymous · Answer

we tried solving this problem for like 2 1/2 hours last night here and no one could help

anonymous · Answer

this is the full problem from exact equations section differential equations class

anonymous · Answer

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