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Math Help - [SOLVED] Accuracy & Error

  1. #1
    cold-peak
    Guest

    [SOLVED] Accuracy & Error

    Hi Everyone,

    Just a quick question regarding Accuracy & Error.

    We have been doing this for a little while (University) and I'm slightly confused with one of the problems.

    I am able to do something like this and achieve the working and answer:

    Code:
    (7.3  0.4) x (1.2  0.6)    /     (5.4  1.3)
    
    ie: 1.3 * 5.4 = 7.02
    
    0.6/1.3 = 0.46
    1.3/5.4 = 0.24
    
    Square root of: 0.46^2 + 0.24^2 = 0.52
    
    = 0.52 * 7.02 = 3.65 to take it out of fractional error form
    
    = (7  3.6) / (5.4  1.3)
    
    = 7/5.4 = 1.29
    
    3.6/7 = 0.51
    
    1.3/5.4 = 0.24
    
    = square root of: 0.51^2 + 0.24^2 = 0.56
    
    = 0.56 * 1.29= 0.7 (to take it out of fractional error form)
    
    ans = (1.3  0.7) * 10^4 etc
    However, when presented with this, I am not sure how to approach it:

    1. The problem statement, all variables and given/known data
    Code:
    (102  32)^5
    2. The attempt at a solution
    I'm just not sure what to do to it... The answer is:
    Code:
     (1.1  0.8) * 10^10
    Just not sure how to get there, any help?

    EDIT: SOLVED - Was being silly!
    Last edited by cold-peak; November 22nd 2007 at 07:53 AM. Reason: Wrong Forum
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  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
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    someplace
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    Quote Originally Posted by cold-peak View Post
    Hi Everyone,

    Just a quick question regarding Accuracy & Error.

    We have been doing this for a little while (University) and I'm slightly confused with one of the problems.

    I am able to do something like this and achieve the working and answer:

    Code:
    (7.3  0.4) x (1.2  0.6)    /     (5.4  1.3)
     
    ie: 1.3 * 5.4 = 7.02
     
    0.6/1.3 = 0.46
    1.3/5.4 = 0.24
     
    Square root of: 0.46^2 + 0.24^2 = 0.52
     
    = 0.52 * 7.02 = 3.65 to take it out of fractional error form
     
    = (7  3.6) / (5.4  1.3)
     
    = 7/5.4 = 1.29
     
    3.6/7 = 0.51
     
    1.3/5.4 = 0.24
     
    = square root of: 0.51^2 + 0.24^2 = 0.56
     
    = 0.56 * 1.29= 0.7 (to take it out of fractional error form)
     
    ans = (1.3  0.7) * 10^4 etc
    However, when presented with this, I am not sure how to approach it:

    1. The problem statement, all variables and given/known data
    Code:
    (102  32)^5
    2. The attempt at a solution
    I'm just not sure what to do to it... The answer is:
    Code:
     (1.1  0.8) * 10^10
    Just not sure how to get there, any help?

    EDIT: SOLVED - Was being silly!
    You may have solved your problem, but if in future you need help try to
    express your problem more clearly. What you were asking here is
    incomprehensible

    RonL
    Follow Math Help Forum on Facebook and Google+

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