Category Archives: Maths

Eval and Let examples

Posted on 21/02/2021 by dougaj4

Final example updated 28th Feb 2021, following comment from Craig: There are many examples of the use of the new Let function on the web (see my previous post on this topic for links). This post compares use of Let … Continue reading →

Posted in Excel, Maths, UDFs, VBA | Tagged , , , , , | 9 Comments

Units4Excel Update

Posted on 29/12/2020 by dougaj4

As discussed here, I have updated the Units4Excel spreadsheet, with the list of non-SI units updated from the latest Wikipedia table. The EvalU user defined function (UDF) has also been modified with three output options, as shown in the screen-shot … Continue reading →

Posted in Excel, Maths, Newton, UDFs, VBA | Tagged , , , , | 5 Comments

Tanh-Sinh Quadrature update

Posted on 26/11/2020 by dougaj4

Following some comments here Graeme Dennes and I have modified the start-up code for the Tanh-Sinh Quadrature spreadsheet to avoid problems opening the file when first downloaded, or copied to a new computer. The new file is located (as before) … Continue reading →

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Newton-Raphson and Brent’s Method – Solver examples

Posted on 08/11/2020 by dougaj4

I recently discovered the Computing Skillset site (via open-struct-engineer), which has good information on the basis and use of the Newton-Raphson method: The Newton Raphson method explained, details, pictures, python code Highly instructive examples for the Newton Raphson method I … Continue reading →

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Numerical Integration With Tanh-Sinh Quadrature v 5.0

Posted on 29/10/2020 by dougaj4

Graeme Dennes has updated his Tanh-Sinh Quadrature spreadsheet to V 5.0. The new version (including full open source code) may be downloaded from: Tanh-Sinh Quadrature Graeme’s summary of the new features in the spreadsheet: The Tanh-Sinh quadrature workbook has been … Continue reading →

Posted in Excel, Maths, Newton, Numerical integration, UDFs, VBA | Tagged , , , , | 13 Comments