A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Find the derivative of f(x) = 6x + 2 at x = 1.

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

    @triciaal on your go

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

    is the question complete?

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

    Derivative is simply the slope at the point at which it is asked isn't it? Your question seems a little arbitrary

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

    the derivative is a constant 6

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

    |dw:1440039324896:dw|

  6. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\dfrac{d}{dx} x^n = nx^{n - 1}\) \(\dfrac{d}{dx} k = 0\) \(\dfrac{d}{dx} k \cdot u(x) = k \cdot \dfrac{d}{dx}u(x) \)

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

    I'm sorry for the late reply. I was away from my laptop. Anyway, should I use this formula?

    1 Attachment
  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    With the formula, I got 6, is that correct?

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

    To find the derivative at x = 1 I would substitute 1 for x; however there is no x to substitute remaining. Therefore, the derivative of f(x) = 6x + 2 at x = 1 is 6.

  10. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Let me give you an analogy to answer your question. If you are in elementary school just learning how to divide numbers using long division, then, if you use a calculator to do a division, you are cheating. If on the other hand, you are taking college physics, and you need to divide two numbers, then most likely you are expected to use a calculator. The way you take the derivative depends on the context. If you are just learning about derivatives, and all you have till now is the definition of derivative with the limit that you just posted, then take the derivative that way. If you already learned other easier ways of taking the derivative, then do that instead. It's very hard for helpers in OS to know exactly at what level of learning you are unless you tell us. That's why our advice may be general at times.

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

    Don't worry, next time I would indicate the knowledge that I only know. I just thought that helpers in OS would explain the steps in solving the problem and not only put formulas. Thank you for your time. @mathstudent55

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

    poo, hah! 6 is correct :) all good?

  13. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1440041418039:dw|

  14. 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.