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Author Archives: dougaj4
Using the VBA ParamArray keyword
The recently posted SolvePoly function makes use of the VBA ParamArray keyword, which allows an arbitrarily long list of arguments to be passed to another function. I have not made great use of this in the past, but since the … Continue reading
Is Hinchliffe’s Rule True? …
… is the title of a paper by Boris Peon. Here is the abstract: Hinchliffe has asserted that whenever the title of a paper is a question with a yes/no answer, the answer is always no. This paper demonstrates that … Continue reading
Long Lost, a WW1 short film …
… and crowd-funded production, directed by my daughter: The story of the project At the start of 2014, sparked by the funding opportunity Raw Nerve (A Metroscreen and Screen Australia initiative) Kerinne Jenkins (director), Harry Windsor (writer) and Nic Douglas … Continue reading
Numerical Integration; Tanh-Sinh Quadrature v. 4.2
The latest version (4.2) of the numerical integration spreadsheet by Graeme Dennes is now available for download from Tanh_Sinh Quadrature. For more details of the background see: Faster Integration with the Tanh-Sinh Method and subsequent posts on this subject. In addition to … Continue reading
Posted in Excel, Maths, Newton, Numerical integration, UDFs, VBA
Tagged Double Exponential, Excel, Gauss-Kronrod, numerical integration, Romberg, Tanh-Sinh method, Tanh-Sinh Quadrature, UDF, VBA
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Solving polynomials – update
The polynomial spreadsheet (details here) provides functions to solve polynomial equations of any order; using an “exact” method for up to quartic, and an iterative procedure for higher orders. The input for the functions requires the equation coefficients to be … Continue reading
Posted in Arrays, Excel, Maths, UDFs, VBA
Tagged Excel, high order simultaneous equations, Polynomial equations, solve simultaneous equations, UDF, VBA
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Newton Excel Bach, not (just) an Excel Blog 