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# Category Archives: Excel

## More powers of 3

Following the discovery of a question to which the answer is 42, the same team has now reported a sum of three cubes equal to 3. As before, the result can be checked from Excel, linking to mpmath, via pyxll. … Continue reading

Posted in Computing - general, Excel, Link to Python, Maths, Newton, PyXLL
Tagged 42, Excel, Life the Universe and Everything, mpmath, PyXLL, sum of 3 cubes
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## A problem with integers in VBA

A recent question at Quora asked: “Why am I getting an overflow error in Excel VBA when doing a simple arithmetic calculation like str1 = 24*60*30 where str1 is a variant or long or double?” I hadn’t encountered that problem … Continue reading

## The answer to Life the Universe and Everything …

is 42, as is well-known: The actual question, to which the answer is 42, is not known, but a lesser known long standing question involving this number has recently been solved: The original problem, set in 1954 at the University … Continue reading

Posted in Computing - general, Excel, Maths, Newton, PyXLL
Tagged 42, Excel, Life the Universe and Everything, mpmath, PyXLL
5 Comments

## Plotting Mandelbrot

There are many sites discussing the Mandelbrot Set, but not many examples using VBA to plot the set in Excel, so here is my effort: The spreadsheet (including open source VBA code) may be downloaded from: Mandelbrot chart.zip Note that … Continue reading

Posted in Charts, Charts, Coordinate Geometry, Drawing, Excel, Maths, Newton, VBA
Tagged Charts, Excel, Mandelbrot Set, VBA
3 Comments

## Using conditional formatting with array formulas

A recent Quora question asked “How do I highlight the number closest to an initial number in a row in Excel?“. The answer by Bill Jelen provides a good example of using conditional formatting with an array formula: In my … Continue reading

Posted in Arrays, Excel
Tagged Array Formula, conditional formatting, Excel, Office Insider
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## 64 bit Excel and the Strand7 API

Back in May 2017 I posted a sample spreadsheet using the Strand7 API to allow Excel to read and write Strand7 node data and results. A comment noted at the time that the spreadsheet was not working with 64 bit … Continue reading

Posted in Excel, Finite Element Analysis, Frame Analysis, Link to dll, Newton, Strand7
Tagged 64 bit Excel, Strand7 API
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## 64 bit Excel and PtrSafe

Installing my Office 365 subscription on a new computer I discovered it had decided (without asking) to upgrade itself to the 64 bit version, which resulted in some of my spreadsheets not working on the new system. The main problem … Continue reading