January 5th, 2015, 02:30 AM  #1 
Newbie Joined: Jan 2015 From: vilnius Posts: 1 Thanks: 0  Exam practice
Hello every one, can any one help me solve these equations, I would be really grateful. Thank you.

January 5th, 2015, 06:06 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,931 Thanks: 2205 
These are hard to read. Also, questions 1 and 2 should be in the differential equations section of the forum. Question 2. A particular solution: $x = t^2  4t + 6$ (not satisfying the initial conditions). General solution $x = (At + B)e^{t} + t^2  4t + 6$. Hence the solution satisfying the initial conditions is $x = (t + 6)e^{t} + t^2  4t + 6$. 

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