
Differential Equations Ordinary and Partial Differential Equations Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 30th, 2012, 01:58 PM  #1 
Newbie Joined: Sep 2012 Posts: 14 Thanks: 0  NonExact Differential equation
Hi, I have another problem that I can't solve: y+2*y^7=(y^3+6*x)dy/dx which gives (y+2*y^7)dx+(y^36*x)dy=0 The equation is not exact, so I tried to find the integrating factor: e^((MyNx)/(M)) wich gives x^(7) When I multiply both equations by x^(7), it's still not exact. I tried many things, but I have no idea what else to try... I need to find the solution x=(something) when the initial conditions are y(0)=1 Can someone help me please? 
September 30th, 2012, 02:28 PM  #2 
Senior Member Joined: Jul 2011 Posts: 118 Thanks: 0  Re: NonExact Differential equation
Integrating factor is 
September 30th, 2012, 02:40 PM  #3 
Newbie Joined: Sep 2012 Posts: 14 Thanks: 0  Re: NonExact Differential equation
Damn of course! Thanks a lot! 

Tags 
differential, equation, nonexact 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
FirstOrder, Exact and Linear Differential Equations  summsies  Differential Equations  2  July 24th, 2013 05:24 PM 
2 exact differential equation  helloprajna  Differential Equations  12  July 19th, 2013 09:21 PM 
Exact differential equation  Survivornic  Differential Equations  3  October 1st, 2012 07:02 PM 
Exact form, differential equations  jakeward123  Differential Equations  23  March 10th, 2011 02:17 PM 
perimeter of an ellipse  exact equation  realritybugll  Algebra  1  June 9th, 2009 07:15 AM 