@PatoCriollo I'm looking for my reservation!.. I don't remember the hotel. But yes, let's dinner on monday. Here is my mail "1:eJxTTMoPChZjYGDILS0qSXQoyk8pykzPB3P0kvNzAZilCqM="
@Szabolcs My personal opinion (as a humble Home Edition user) is that although their technical support can rarely deliver productized fixes (instead of workarounds at better situations), their reaction time and interest to reproduce bugs is quite good.
How this question How to create a reliable natural integral operator? a duplicate of this one Under what conditions does Mathematica give a natural antiderivative when integrating? ?
The older question asks about Mathematica's behavior, the later one asks how to construct a function. How they ca...
@Pickett Here's a life pro-tip: When you are taking courses, work out what the person grading the exams/assignment wants and do it. Trying to think for yourself generally will lower your results. This depends on the person marking you (which itself depends on where you are), but you cannot go wrong with this. This sounds obvious, but usually it's presented as if independent thinking etc is valued. Make no mistake, it's not (in general).
Now if you are eg also starting to work in a language you're unused to, then they may even be right! But failing you for writing convoluted code is stupid. Then again, who am I to have an opinion.
I’m usually going on about “computation,” or in education, “maths.” But I’ve come to appreciate just how much of computation’s utility in modern life centres around data (rather than, say, algebraic modelling). Clearly data science is a major, growing, and vital field—one that’s relatively new in its current incarnation. It’s been born and i…
@Pickett Thinking like that helps throughout your life :)
And for some reason people like to pretend that's not how it works.
I remember reading a book about Nobel prize winners, and the author basically was trying to come up with an explanation as to why Nobel prize winners had a much higher probability of being students or postdocs of Nobel prize winners than average. She came up with a theory that genius attracts genius
Simple observation would seem to indicate that having a Nobel prize winner as a supervisor opens doors, and if you're halfway smart (which you probably are, as are a few hundred of your peers) you'll have a huge headstart.
But, no. There is a mystical attraction effect.
Anyway. It took me a long time to work out that this simple piece of advice ("work out what was successful and do that, ignoring what else you're told") is the key to everything. Once I started doing that, my (academic) life became so much easier that it's infuriating.
Lecture over :)
So, all, what interesting questions did I miss over the past month?
@Pickett Yes, but they get a lot of them. How do you distinguish between them? Trust me on this one (I say this as someone who's benefitted from the elitism inherent to academia!). Mind you I am not claiming there is no correlation between ability and success; only that the correlation is very weak above some ability level (which is not as high as you may think).
I'm not saying there's a coverup or anything, it's just that those who do not find this obvious usually realise it too late to fix things.
I am to create a function that replaces columns 'm' through till 'n' with zeros. Here is what I have so far:
zeroColumns[mat_, m_ ;; n_] := ReplacePart[mat, {_, m | n} -> 0]
list1 = {{1, 2, 3, 4, 4}, {4, 5, 6, 9, 5}, {7, 3, 8, 9, 5}, {14, 3, 1,5, 6}}
zeroColumns[list1, 1 ;; 3]
which returns
...
I have this matrix:
mat = {{1, 2, 3, 4, 5}, {6, 7, 8, 9, 10}, {11, 12, 13, 14, 15}, {16,
17, 18, 19, 20}, {21, 22, 23, 24, 25}};
and here are its second row and second column:
{mat[[2]], mat[[All, 2]]}
(* {{6, 7, 8, 9, 10}, {2, 7, 12, 17, 22}} *)
When I tried to change its second colum...
The fastest existing solution to the first question is part of the second, and additional explanation and exploration is provided therein.
Please review and vote (or not) accordingly.
@Pickett Great jumping horny toads! What a narrow-minded individual. I would take special pride in failing that fool's class though it would deeply pain me to pay for any part of it.
Okay, I just got to the part where this was not Mathematica code and where rm -rf gives a MatLAB perspective so I guess I should back down. I was ready to do battle over this. :^)
@acl I empathize with the cynicism, and I know calling it an uphill battle is a wild understatement, but isn't it up to everyone working in academia to strive to make it better? Being creative, working on your own ideas, and taking a different path is what makes an academic career worthwhile. If you end up having to compromise that, it sounds like a bitter road to "success" (not being critical, just thought I'd butt in and share my naive view on things).
I have this matrix:
mat = {{1, 2, 3, 4, 5}, {6, 7, 8, 9, 10}, {11, 12, 13, 14, 15}, {16,
17, 18, 19, 20}, {21, 22, 23, 24, 25}};
and here are its second row and second column:
{mat[[2]], mat[[All, 2]]}
(* {{6, 7, 8, 9, 10}, {2, 7, 12, 17, 22}} *)
When I tried to change its second colum...
