A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

1. Find the directional derivative of f(x)= x^2=2y in the direction of 3i=4j. Evaluate the directional derivative at the point (1,2,6)

  • This Question is Closed
  1. helpmeplease
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Your f(x) is strange. It should be f(x,y). Do you mean f(x,y) = x^2-2y? If so, then you can take the gradient of f(x,y), then take the dot product of the components with the direction. Then you can plug in the point and solve.

  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it could be, i'm just taking the problem off of my worksheet and that's what it says.

  3. helpmeplease
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You might have to use the limit definition of a directional derivative then. The function f(x) might be (x^2)/2.

  4. 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.