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For me, the biggest gotcha for the unsuspecting with Dot is that it's noncommutative. If you're innocently normalizing vectors without a keen and active understanding of Mathematica's generalized approach to tensors and of its Attributes structure...
I think we won't have to choose one or the other. RPi is good at some things and clumsy at others. Arduino the same. There's enough interest in this, though, that there should be a wealth of hybrid solutions....
Thanks for the response, Lambert, but it wasn't a typo. I tried it because that was the name returned by $ImagingDevices and was the $DefaultImagingDevice. Out here in the near perfect  vacuum of documentation space, we have no way to know whether...
Nothing is so bad that it can't be made worse. I just went through this process without benefit of the advice in this conversation. Instead, in my thrashing, trying things that might work, I set the default kernel to one of the RPi kernels. This...
I have only a rudimentary knowledge of Geogebra, but I think you would find that anything you can do in Geogebra you can duplicate in Mathematica, but Mathematica is immensely more powerful. In Mathematica you don't "create a 3D axis (itself a...
These are some notes about things I encountered during startup of my RPi and installation of Mma - notes that could have saved me some time, reduced my FUD and raised my confidence if I had found them somewhere before I started.  Hardware: recent...
I have a set of symbolic algebraic expressions that I'm trying to get some speed into. To illustrate the issue, I'll use a simple form like { k0 X, k1 Y, k1 Z}, where each term is large and complicated. By random walk, I've arrived at a promising...