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!

Homework Help: Using implicit differentiation: Is this correct?

  1. Oct 16, 2012 #1
    1. The problem statement, all variables and given/known data

    I need to use implicit differentiation to find the derivative of y=sin(x+y).

    2. Relevant equations

    3. The attempt at a solution

    This is what I did:

    y'=(1+y')(cos(x+y)) (by the chain rule)

    Now, what do I do? Is this correct:

    y'= cos(x+y) / 1-cos(x+y)

  2. jcsd
  3. Oct 16, 2012 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Gold Member

    It's correct with the added parentheses.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook