
Differential Equations Ordinary and Partial Differential Equations Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 29th, 2018, 11:59 PM  #1 
Newbie Joined: Sep 2018 From: hyderabad Posts: 1 Thanks: 0  problem to be solved
anyone plz help me answer this... solve dx/dt=y+t and dy/dt=2x+3y+1 using simultaneous L.D.E 
September 30th, 2018, 03:48 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,293 Thanks: 1968 
2dx/dt  dy/dt = 2x  y + 2t  1, so 2x  y = Ae^t  2t  1. $\ $ dx/dt  dy/dt = 2x  2y + t  1, so$\,\,$ x  y = Be^(2t)  t/2 + 1/4. Hence x = Ae^t  Be^(2t)  (3/2)t  5/4, y = Ae^t  2Be^(2t)  t  3/2. 

Tags 
differential equation, engineering mathmatics, problem, solved 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Mysterious probability problem wants to solved!!!  Yoha  Advanced Statistics  0  February 26th, 2012 09:54 PM 
[SOLVED] Another algebra word problem  daigo  Algebra  6  February 2nd, 2012 05:00 PM 
Problem with a proof [SOLVED]  HTale  Number Theory  0  December 17th, 2008 03:47 PM 
GCD problem; SOLVED  yttrium88  Number Theory  2  November 2nd, 2007 02:08 AM 