I don't understand the problem. Could you please post the full text of the problem? Is it an integration or differentiation or what? Are you taking partial derivatives?teng125 said:the eqn is (x-1)dx + (y+1)dy=0 , y(1)=0
just only this
Of course it's exact: [itex]\frac{\partial (x-1)}{\partial y}= \frac{\partial (y+1)}{\partial x}= 0[/itex]. In fact, it's separable.teng125 said:Are the following differential equations exact? Solve the IVP:
(x-1)dx + (y+1)dy=0 , y(1)=0