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: Q in derivatives

  1. Jun 5, 2010 #1
    Q Find all older derivatives



    y = X^4/2 = 3/2X^2 -X



    y4 = 2X^2 - 3 x ^ 1 - 0

    y4 = 4X^1 - 3 -0

    y4 = 7
     
  2. jcsd
  3. Jun 5, 2010 #2

    lanedance

    User Avatar
    Homework Helper

    thats not so much a question as it is random keystrokes... ;)
     
  4. Jun 5, 2010 #3

    Mark44

    Staff: Mentor

    Do you mean y = (1/2)x4 - (3/2)x2 - x?
    What is y4 supposed to be? Since you have taken the derivative, this should be y'. Of the three terms you differentiated on the right side, only one is correct: d/dx[-(3/2)x2] = -3x. The other two terms have errors.
    ???
    ???
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook