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

swissgirl Group Title

What is the fourth derivative of \(f(x)=3xe^x-e^{2x}\) ?

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. bahrom7893 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    well f'(x*e^x) = x*e^x + e^x = e^x(x+1). So: f'(x) = 3e^x(x+1) - 2e^(2x) f''(x) = (3xe^x+3e^x - 2e^(2x))' = 3e^x(x+1)+3e^x - 4e^(2x)

    • 2 years ago
  2. bahrom7893 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    f'''(x) = (3xe^x + 3e^x + 3e^x - 4e^(2x))' = (3xe^x + 6e^x - 4e^(2x))' = 3e^x(x+1) + 6e^x - 8e^(2x)

    • 2 years ago
  3. bahrom7893 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    I think I made a mistake in f''(x)

    • 2 years ago
  4. Hero Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes, you did

    • 2 years ago
  5. bahrom7893 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    No i didn't

    • 2 years ago
  6. Hero Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    You made a mistake somewhere

    • 2 years ago
  7. bahrom7893 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    f''''(x) = (3xe^x+3e^x+6e^x-8e^(2x))' = (3xe^x + 9e^x - 8e^(2x))' = 3e^x(x+1)+9e^x - 16e^(2x) <-Final answer

    • 2 years ago
  8. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Btw u didnt go wrong

    • 2 years ago
  9. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Thankkksss Bahhhrrrooommmmmmm

    • 2 years ago
  10. bahrom7893 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    Hero.. like i said.. ignore me.

    • 2 years ago
  11. Hero Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Yeah, that's the correct answer

    • 2 years ago
  12. Hero Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Why do you want me to ignore you @bahrom7893

    • 2 years 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.