Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Nada721 Group Title

Find the general solution of the given differential equation 2y''+ 2y'+y = 0 Please help me solve this.

  • one year ago
  • one year ago

  • This Question is Closed
  1. modphysnoob Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    use the characteristic equation, do you know how?

    • one year ago
  2. Nada721 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes it's just the answer has sine and cosines in it and I don't know how they got it

    • one year ago
  3. Spacelimbus Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    that's because your answer are complex conjugated solutions. Have you dealt with them before?

    • one year ago
  4. Nada721 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    No. All of the other questions were not like that

    • one year ago
  5. Spacelimbus Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    It's a bit hard to explain the nature of complex numbers and how they apply to Differential Equations in just one post, it's a rather big topic, but if you want, I can link you to Pauls Website where he deals with complex solutions.

    • one year ago
  6. modphysnoob Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    just solve it using characterist equation; you should get expoential(like you always do) but with complex power; use euler idenity to get sin/cos

    • one year ago
  7. Nada721 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I was looking at it earlier under repeated roots and reduction order but it didn't help

    • one year ago
  8. Nada721 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Euler's identity? Yea we didn't cover that. I guess il try looking that up

    • one year ago
  9. Nada721 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you both for your help

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.