Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I ...

When you want to get an idea of a company's financial condition, ratio analysis is one of the tools of the trade. In the following article, you'll learn about two useful balance sheet ratios: the debt ...

Using LaGrange multipliers an example is given wherein the optimum level of a fitted second order response function is obtained subject to a constraint provided by another fitted second order response ...

Generalizing Hosking (1980a), the Lagrange-multiplier test procedure is applied to hypotheses concerning multivariate autoregressive moving-average time-series models. The portmanteau and Quenouille ...