The words contained in this file might help you see if this file matches what you are looking for:

...Exact dierential equations solving an de making a conclusion math section prof jonathan duncan walla university spring quarter outline motivating example our tools so far allow us to solve rst order which are separable and or linear is the following equation tanx sinx siny dx cosx cosy dy after rewriting as shown what do you notice not weneed new solution method for this working backwards wedevelop using calculus notation dierentials recall that if f x y has continuous partials on some region of xy plane then with z dz why use now we nd set c any constant...