A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

AmTran_Bus

  • one year ago

d/dx of (x^3+2x)e^x

  • This Question is Closed
  1. AmTran_Bus
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I used the chain rule, but chegg says the product rule. Why? I got e^x(x^3+2x)*3x+2

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

    @Zale101

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

    product ruleeee :)

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

    But why? guess I dont understand the concept.

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

    \[\Large\rm \frac{d}{dx} (x^3+2x)e^x=\color{orangered}{(x^3+2x)'}e^x+(x^3+2x)\color{orangered}{(e^x)'}\]

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

    You have two x-thingy's being multiplied together, that's called a product

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

    Would I have used the chain rule if the (x^3+2x) had of been squared or cubed?

  8. zepdrix
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Chain rule is when you have a function inside of a function. Product rule you apply when you have a function `next to` a function.

  9. zepdrix
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes. Good.

  10. AmTran_Bus
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ok. I think I got it now. Thanks.

  11. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.