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#1 2007-03-11 12:19:18

freddogtgj
Member
Registered: 2006-12-02
Posts: 54

Differential Equation Problem

The question I'm having a problem with is:
16y'' + 8y' + 5y - 10x = 0,    y(0)=-2,  y'(0)=-1

I got half of it done, but I'm not sure whether I'm doing it right...can someone help me?

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#2 2007-03-11 13:17:58

JaneFairfax
Member
Registered: 2007-02-23
Posts: 6,868

Re: Differential Equation Problem

Here’s a very useful site to check out for when you have problems with differential equations:

http://eqworld.ipmnet.ru/en/solutions/ode.htm

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#3 2007-03-11 13:30:00

Stanley_Marsh
Member
Registered: 2006-12-13
Posts: 345

Re: Differential Equation Problem

  ,LOL , I just followed the steps on my formular book , and got that , no idea how to get it at all.


Numbers are the essence of the Universe

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#4 2007-03-11 13:32:34

Stanley_Marsh
Member
Registered: 2006-12-13
Posts: 345

Re: Differential Equation Problem

I wanna learn Differential Eq too , That Website totally rocks~ thanks  JaneFairfax.

But it only has solutions , I wonder how they found those solutions.Need Proof

Last edited by Stanley_Marsh (2007-03-11 13:34:56)


Numbers are the essence of the Universe

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#5 2007-03-12 08:53:09

freddogtgj
Member
Registered: 2006-12-02
Posts: 54

Re: Differential Equation Problem

Brilliant website JaneFairfax and Stanley_Marsh I got something similar, but not exact

Last edited by freddogtgj (2007-03-12 08:54:08)

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#6 2007-03-12 11:27:16

JaneFairfax
Member
Registered: 2007-02-23
Posts: 6,868

Re: Differential Equation Problem

Did you get

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#7 2007-03-12 22:16:39

freddogtgj
Member
Registered: 2006-12-02
Posts: 54

Re: Differential Equation Problem

Yes, but I'm not sure about the coefficients of cos and sin...I have to double check

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