cubic

I've to calculate total cubic volume of a product packaging. 1) Below are all mm 2) formula used is SUM(L*W*H) 3) Question, i've never done this before so seeking advice im correct or advise me what forumla and method is better? 4) Using Mac Excel 2016 (sorry unable to paste in properly)...

Hey all, I would like to resolve this equation in VBA but without using solver tool: δ (2 - α²δ (2 - α)) / (α²δ² + 3 (α - 2αδ + δ)) = 4ξ α (2 - αδ² (2 - δ)) / (α²δ² + 3 (α - 2αδ + δ)) = 4η My unknowns are δ and α. We know ξ and η. I know it's mainly a mathematical resolution but if you know...

Hi, I am trying to LINEST to return coefficients using a cubic function in Excel 2013 but I am getting wrong results for two of the coefficients. Using the builtin Chart Trendline produces correct coefficient for my regression but LINEST (and Data Analysis Regression for that matter) produces...

Hi Guys, I have been searching the net for a piecewise cubic spline fitting vba code in which I can specify the knots in the curve. Does anyone have it available? I have had no luck finding it so far. All I get is cubic spline codes without having the flexibility to do it piecewise. I am...