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Jeel Shah
Jeel Shah
01:05
Hi all, quick question! I have a list for numbers where I would like to add the first element to the second, third etc. Then, add the second element to first, third, fourth etc. In other words, have a nested for loop. I am using Table right now but it's painfully slow. :(
 
3 hours later…
b3m2a1
b3m2a1
04:00
@JeelShah Outer[Plus, array, array] and ignore the diagonal?
anhnha
anhnha
04:52
Does anyone know what is wrong with this?
DSolve[{x'[t] == -2 x, x[0] == 3}, x[t], t]
DSolve::dvnoarg: The function x appears with no arguments.
hm I found it
I should use x[t] in all places
When I plot this function:
Plot[3 E^(-2 t), {t, 0, 10}, GridLines -> Automatic]
The graph looks bad as it doesn't include the value near 0
when I add PlotRange --> All
it works fine
Plot[3 E^(-2 t), {t, 0, 10}, GridLines -> Automatic, PlotRange -> All]
ibb.co/GRPBVsL
what is the logic here?
why don't they add PlotRange --> All automatically?
 
9 hours later…
István Zachar
István Zachar
13:56
Could anyone install/upgrade Mathematica 12.3 on a Windows 7 machine?
 
2 hours later…
Feeds
Feeds
15:40
Wolfram Blog: Sleuthing DarkSide Crypto-Ransom Payments with the Wolfram Language
posted on May 25, 2021 by Dariia Porechna

Let me tell you a story about how to trace Russian hackers’ cryptocurrency funds using only public knowledge, some educated guesses and the Wolfram Language. But first, a little background information. On May 7, 2021, Colonial Pipeline was the victim of a ransomware attack, which forced the largest fuel pipeline in the US to shut […]


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