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Derivative problem order of opeartions

  1. Aug 11, 2009 #1
    Derivative problem "order of opeartions"

    1. The problem statement, all variables and given/known data

    = lim [75-(10+20h+10h"squared") + (1+h)] - (66)
    h-0 h

    = lim -19h - 10h"squared"
    h-0 h

    2. Relevant equations
    So sorry, as this is a simple understanding; which i don't have. But how did the author arrive to the second part of the equation? I forget the order of operations.


    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Aug 11, 2009 #2

    Dick

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    Re: Derivative problem "order of opeartions"

    The numerator is 75-(10+20*h+10*h^2)+(1+h)-66. That's the same as 75-10-20*h-10*h^2+1+h-66. Negate the terms in parentheses if there is minus outside, leave them alone if there is a plus outside. Now just combine constants and equal powers of h. Is that your question?
     
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