what is the log-likelihood of the model? which method best demonstrates covariance of k sigma what is a normal range for r how to ensure that log-likelihood of a variable stays positive definite how to ensure a model that is positive-definite? which of the following would be useful for fitting a multivariate model using maximum likelihood what is the log likelihood of the matrix of a multivariate optimisation problem? what is the log likelihood of a model how do you ensure that a log-likelihood is definite how to ensure that the matrix matrix is positive definite how to ensure ________ of a nonlinear model of a k-times k-variation how to ensure properties of covariance matrix how to ensure covariance matrix is positive how do i prove my logistic model is positive-definite how to find covariance matrix r what a log likelihood model if the matrix of a multivariate normal model is positive definite, which method would we use to ensure such a model how to ensure that r variable is positive how to ensure that the matrix in the log-likelihood is positive-definite what is the maximum likelihood method for the r log?