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NMinimize apparently enters an infinite loop
I've stumbled across what seems to be a weird interaction of the NMinimize function.
I'm minimising the function -Log[Sin[2x]] + a Cos[x]^2 for 0ドル < x < \pi/2$...
1
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0
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40
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How to simply change filled-in marker with empty circles in the given code?
I use this code
p1 = Graphics[{PointSize[0.05], Red, Point[{{4, 0}, {7, 0}}]}];
p2 = Plot[Sin[x], {x, 0, 10}, PlotRange -> {-2, 2}];
Show[{p1, p2}]
which gives ...
2
votes
1
answer
151
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Converting a list of a function in Mathematica
Assume that I define:
...
4
votes
1
answer
125
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Feature Extractor for Molecules
Running FeatureSpacePlot[mols] gives me an interesting plot and I would like to understand the method.
Does anyone know or can point me to a reference page on how ...
3
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1
answer
141
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Is RarerProbability useful with asymmetrical distributions?
The documentation clearly states that for the symmetrical normal distribution RarerProbability[distribution,x] gives the two-sided p-value for x.
Using direct ...
2
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1
answer
101
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Integration of function involving ArcCsc with assumptions returns wrong answer
When I ask Mathematica (version 14.1) to do the following symbolic integration:
...
1
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0
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47
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How to make a Framed PlotLabel span the exact width of the plot Frame?
I am trying to add a title with a background color to my plot. Currently, using Framed inside PlotLabel only creates a box around the text itself.
I want the background box of the title to:
Span the ...
1
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0
answers
51
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ToRules that preserves conditions that cannot be written as Rules
I would love to have a ToRules that can act on say Reduce output that preserves conditions that cannot be written as rules. Something that creates something like
...
0
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0
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53
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The heat conduction equation of solar cells can't be solved [duplicate]
The heat conduction equation of solar cells can't be solved. NDSolveValue::ndnum: Encountered non-numerical value for a derivative at x == 0. ...
3
votes
1
answer
88
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How to preserve tooltips for SVG Maps created by Mathematica?
I want to produce an SVG map by Mathematica that preserves tooltips that are in Mathematica so that they are also in the SVG. The problem is that the tooltips do not export.
Here is an example:
That ...
2
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2
answers
117
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Define meaning for symbol such as ⇓ despite 'Incomplete expression; more input is needed'
Example
The notation $a\Downarrow_bc$ can mean something like "the program $a$ results in $c$ when executed according to the semantics of $b$".
In Mathematica, I input this as ...
7
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0
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133
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CollinearPoints returning True for noncollinear points
I think there might be an issue with CollinearPoints at least in the 14.2 Windows version I'm using. The issue arises where there are duplicate points and mixed ...
3
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2
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119
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Matching an expression in Hold
Trying to replace some of the expressions wrapped by Hold as below to get $\frac{k d\theta }{dt},ドル ReplaceAll does not replacing ...
3
votes
2
answers
281
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Mathematica does not give me any contour here
I would like to have an idea what kind of curbe is being formed from the intersection of the plane $x+y+z=9$ with the surface
$\sqrt{16-x^2}+\sqrt{25-y^2}+\sqrt{36-z^2}=12$ under the restriction $x,y,...
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0
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103
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We cannot numerically solve the heat conduction equation of solar cells, where Q is the heat generation term [closed]
The heat conduction equation of solar cells cann't be solved. NDSolveValue::ndnum: Encountered non-numerical value for a derivative at x == 0.`. NDSolveValue::femcnsd: The PDE coefficient -((2.4810^-...