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Question 5.7

Discussion in 'CT3' started by spjgriw, Oct 15, 2007.

  1. spjgriw

    spjgriw Member

    I'm struggling to see how when you differentiate

    3(4-t)^-1 that you get 3(4-t)^-2

    Surely this should be -3(4-t)^-2 ???

    Regards

    Richard
     
    spjgriw, Oct 15, 2007
    #1
  2. 4EverStudent

    4EverStudent Member


    No, it is 3(4-t)^-2 as the -ve from the -1 and the -ve from the -t combine to give a +ve outside the bracket.
     
    4EverStudent, Oct 15, 2007
    #2

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