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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.
    ???
    ???
     
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