# User Portlet

Sander Huisman
Discussions
Hi Jonathan, not clear to me should it create a question in natural language and give a Wolfram expression as the answer?
Very nice! How do you 'push-over' the first domino?
You can also use {}.
I guess i've done 100+ recent months… ~150 or so remaining. See you in the next stream :-)
Lookup the function Function in the documentation: https://reference.wolfram.com/language/ref/Function.html There are several notations one of them with # and &, basically # will be the 'input" and & denotes that it is a "pure" or lambda...
Obviously, this will not short circuit, it will first map everything and then apply the And operator. You would have to do this: ` And[Print[2]; EvenQ[2], Print[4]; EvenQ[4], Print[6]; EvenQ[6], Print[1]; EvenQ[1], Print[3]; EvenQ[3],...
If scipy just uses machine precision arithmetic it might just simply not be enough to calculate with the correct precision. Since the real part is determined by the Bessel function of the second kind: N[BesselJ[16, 3], 25] You can...
I would guess this is not in the QRDecomposition part but rather in some simplification algorithm it uses internally to simplify expressions. Do you need the result to be symbolic? Because you're pushing the limits I think with doing QR...
I think that that is there to prevent companies from using student licenses. Not sure if that can be (easily) removed…
Hi Alexandre, Version of Mathematica and operating system would be useful to know.