E^x+ydx + e^2y-xdy = 0?

#e^(x+y)dx + e^(2y-x)dy = 0?#

2 Answers
Apr 11, 2018

#1/2 e^(2x)+e^y=C#

Explanation:

The equation

#e^(x+y)dx + e^(2y-x)dy = 0#

is easy to rewrite in the form

#e^(2x)dx+e^ydy=0#

Integration yields

#1/2 e^(2x)+e^y=C#

where #C# is a constant of integration.

Apr 11, 2018

#"The GS : "e^(2x)+2e^y=C,#

Explanation:

I hope, the Question is to find the General Solution (GS) of the

Diff. Eqn. (DE) : #e^(x+y)dx+e^(2y-x)dy=0#.

Multiplying the given eqn. by #e^(x-y)#, we get,

#e^{(x+y)+(x-y)}dx+e^{(2y-x)+(x-y)}dy=0, or, #

# e^(2x)dx+e^ydy=0#.

This is a Separable Variable Type DE.

To have its GS, integrating, #inte^(2x)dx+inte^ydy=c#.

#:. 1/2e^(2x)+e^y=c, or, #

# e^(2x)+2e^y=C,# is the desired GS, where, #C=2c#.

Enjoy Maths.!