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Math Help - Algebra of errors

  1. #1
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    Post Algebra of errors

    I am very sorry if this is in the incorrect section!

    After measurements, the following values and their uncertainties were recorded:

    x = 8.3 0.1 and y = 2.72 0.07

    Find the following values of Z

    a) Z = x + y

    b) Z = x - y

    c) Z = xy

    d) Z = x/y

    e) Z = y/[(x)^0.5] (this is y divided by the square root of x)

    f) Z = exp(y)

    g) Z = ln(x + y)

    h) tan(x/y)

    My attempts: a) 11.02 0.17 ; b) 5.4 0.2 ; c) 22.576 0.007 ; d) 3.1 1.4 ; e) 0.94 0.22 ; f) exp(2.72 0.07) ; g) ln(11.02 0.17) ; h) tan(3.1 1.4)

    Any help would be appreciative, I'm a bit rusty, having not done any physics in two years, and apparently, my attempts are all incorrect!
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  2. #2
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    most likely, you need to pay attention to the number of significant digits.
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  3. #3
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    Apparently it's more fundamental than that and he wont help me (my friend), very competative for some sad reason
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  4. #4
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