Long Division — Just Write the Answer Oct 2021

Five Easy Inverses (marked) What is 44/201? (marked) Hey Wolfram Alpha, what is 44/201? Five Easy Inverses (unmarked) What is 44/201? (unmarked) References Dr. Aitken was both a mathematician and a mental calculator. His prowess is described in the first link below (about halfway down the page). https://mathshistory.st-andrews.ac.uk/HistTopics/Mental_arithmetic/ And here’s a second link — well […]

Continue Reading

Long Division Simplified Oct 2021

Problem 1 Problem 2 References Dr. Aitken was both a mathematician and a mental calculator. His prowess is described in the first link below (about halfway down the page). https://mathshistory.st-andrews.ac.uk/HistTopics/Mental_arithmetic/ And here’s a second link — well worth reading. https://cowles.yale.edu/sites/default/files/files/pub/d17/d1750.pdf

Continue Reading

Mathpix Snip Sep 2021

Take a photo of a handwritten math problem and get the LaTeX code from your smartphone (or computer) Take a photo on the iPhone, and crop it. Submit and voilá. Here’s the LaTeX code (I added code shown in red to remove the equation number): \begin{equation} \[ \therefore R_{1}=\left(\frac{q a}{2}\right)\left[2-\alpha^{2}(1+\beta)\right] \end{equation} \]

Continue Reading

The (W)rapper Tower Sep 2021

Maybe you’ve seen this; I just now noticed this building project. At first, I thought I was seeing ‘decorative’ bands; but this is the exoskeleton, the load carrying frame. The (W)rapper Building Los Angeles, CA Excerpts “Arup used an LS-Dyna model for its nonlinear seismic analysis of the (W)rapper.” “EOMA, Eric Owen Moss Architects, created […]

Continue Reading