Recent content by latvietis

  1. L

    Graduate Negative values in covariance matrix

    Ok But problem is that the negative values is in diagonal elements. Diagonals elements of covariance matrix is \sigma^2. So I get that errors of functions coefficients \sigma is imaginary.
  2. L

    Graduate Negative values in covariance matrix

    Hello I had measured luminescence decay profile. Then I want to fit a function which would approximate my experimental date. For that I make a simple program in LabWiev. The problem is that, that program give me out a negative values in covariance matrix. Why that? P.S. Sorry for my English
    • latvietis
    • Thread
    • Covariance Covariance matrix Matrix Negative
    • Replies: 2
    • Forum: Calculus