Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2011-04-12 12:21:00

Cosmopolite
Member
Registered: 2011-01-04
Posts: 6

Undetermined coefficient.

I had this equation on my test, yesterday and I just couldn't do it. Hopefully someone in here will do better than me.

Y'''+Y' = X^2.

I was only able to solve the homogenous equation Y'''+Y' = 0.
My answer was y = C1+C2*cos x+ C3 *sinx.

Offline

#2 2011-04-12 16:39:45

gAr
Member
Registered: 2011-01-09
Posts: 3,462

Re: Undetermined coefficient.

Hi Cosmopolite,



"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

Offline

#3 2011-04-18 01:45:07

Cosmopolite
Member
Registered: 2011-01-04
Posts: 6

Re: Undetermined coefficient.

Thank you.

Offline

#4 2011-04-18 01:46:44

gAr
Member
Registered: 2011-01-09
Posts: 3,462

Re: Undetermined coefficient.

You're welcome.


"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

Offline

Board footer

Powered by FluxBB