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Find the maximum value?

  1. Dec 1, 2013 #1
    1. The problem statement, all variables and given/known data
    Given a=11+/-0.5, b=0.04562+/-0.0001, c=17200+/-100. Find the maximum value of the absolute error in a+2b-c.


    2. Relevant equations
    absolute value of (0.5+2(0.0001)-(-100)=100.5002

    11-0.5=10.5
    0.04562-0.0001=0.04552
    17200+100=17300
    absolute value of (10.5+2(0.04552)-17300)=17289.40896


    3. The attempt at a solution
    Which of these answers is the correct answer? Is it 100.5002 or 17289.40896?
     
  2. jcsd
  3. Dec 1, 2013 #2

    phinds

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    2016 Award

    Well, are you trying to find the absoulte value of the sum or of the error?
     
  4. Dec 1, 2013 #3
    Maximum value of the absolute error, just what the question asks. Which of the answers is right?
     
  5. Dec 1, 2013 #4

    phinds

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    Gold Member
    2016 Award

    Well, what do the two numbers you came up with represent?
     
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