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Error calculation

  1. Oct 22, 2003 #1
    Suppose I have some measures of certain physical magnitude "I" between the range x=x1 and x=x2.

    I have for each x in this range a value y of I, then y=I(x)

    I have a continuous level of noise y=y1.

    I have I(x3)=y3 with x1<=x3<=x2.

    how can I compute the error measuring y3?

    Thank you
  2. jcsd
  3. Oct 22, 2003 #2


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    If I read this correctly then I(x) is a function of x for x between
    x1 and x2. You then say "I have a continuous level of noise y=y1."
    That's a bit confusing. Is y1 a constant? Since you had already used y to represent the value of the function I(x), do you intend y1 to be a noise on the value of I(x) or on x itself? I doubt that you intend the former since that in that case the answer would be, of course, y1. If you intend the latter, then, since relationship between the error in x and the error in y= I(x) depends heavily upon the function I, there is no general formula.
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