1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Differentiating with respect to t implicitly

  1. Apr 26, 2009 #1
    a particle moves along the curve xy=10, x=2 and dy/dt=3, what is the value of dx/dt?

    i tried product rule and got x*y*dy/dt + y*x*dx/dt = 0 and the answer that i get doesnt appear on the multiple choice answers
    a)-5/2 b)-6/5 c) 0 d) 4/5 e) 6/5

    i dont know what im doing wrong a little help would be nice ty.
  2. jcsd
  3. Apr 26, 2009 #2


    User Avatar
    Homework Helper

    You did your differentiation wrong. Applying the product rule correctly yields d(xy)/dt=x dy/dt+y dx/dt.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Differentiating with respect to t implicitly