New answers tagged evaluation
7
This will not work. Python does not know what mylist is:
mylist = {1, 2, 3, 4};
ExternalEvaluate["Python", "sum(mylist)"]
You must get the value of mylist into Python somehow. This could be done with string replacement:
ExternalEvaluate["Python", "sum(" <>
StringReplace[ToString[mylist], {"{" -> &...
2
The problem was that I activated the automatic save after each evaluation, but was working on a notebook that had not been saved yet - hence the beep. As mentioned in the comments, going to Help and clicking on Why the Beep? showed clearly why this was happening:
6
You can open Option Inspector and change the prompt of calculation completion to other options.
2
Maybe you can use the following codes:
x = {1, 2, 3, 4};Solve[y == z^2] /. z -> x
The final result is：
{{y -> {1, 4, 9, 16}}}
1
Why not bypass Solve, and apply the square directly:
x={1, 2, 3, 4};
y = x^2
{1, 4, 9, 16}
More complicated operations:
y= somethingComplicated[#]&/@x
2
You need to turn $Context into a string. You also do not need to add the quotation marks, as you are joining strings, so the end result will automatically be a string again.
This should do what you want.
Clear@Evaluate[ToString[$Context] <> "*"]
1
We can test the first pies of code and get a message
end = 20.0;
un = NDSolveValue[{D[u[s, x], s] == u[s, x] D[u[s, x], x, x] + 20.0,
DirichletCondition[u[s, x] == 0.0, x == 0.1 || x == 1],
u[0, x] == 0.0}, u, {s, 0, end}, {x, 0.1, 1.0}]
NDSolveValue::femcscd: The PDE is convection dominated and the result may not be stable. Adding artificial ...
0
You can use TextGrid with the ItemSize option:
TextGrid[
functionList,
Alignment -> {Left, Top},
Spacings -> {2, 2},
Frame -> All,
ItemSize -> {{5, 30, 10}, Automatic}
]
You could also use the ItemSize option with Grid, but TextGrid looks a bit better, and also it takes care of the copy-and-paste problem that you encountered.
4
Clear["Global`*"]
f[h_, s_, a_, b_] :=
0.00015034013139827721*
h^4*(-12.512450890438938 + Log[0.10272025*RealAbs[h^2]]) -
0.00463012409828799*
h^4*(-12.512450890438938 +
Log[0.49368002148788936*
RealAbs[h^2]]) + (3*(14922.284640000005 + 0.4*h^2 - 272.22*s +
0.3818*s^2)^2*(-12.512450890438938 +
Log[...
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