# Tagged Questions

This tag is reserved for questions where the problem has been vetted by this community and the observed behavior is confirmed to be a bug. Please do not use this tag for new questions. Please use the standard bugs header instead of version tags in conjunction with this tag.

475 views

### CUDAQ not working in Mathematica 10.2.0.0 on Windows 7 (using CUDA 7.5)

I have been trying to get CUDA to work in Mathematica for kernel development. I downloaded and installed Visual Studio 2013 Community and the latest NVIDIA developers toolkit 7.5 (in that order). ...
104 views

### Bug in PiecewiseExpand and Mod with assumptions

Bug introduced in 9.0 or earlier and fixed in 10.4 The following code using PiecewiseExpandand Modgives the wrong answer <...
208 views

### Why does Nearest not support Sqrt?

Bug introduced in 10.0.2 and fixed in 10.3.0 Simple examples with two points nf1=Nearest[{{0, 0}, {Sqrt[2], Sqrt[2]}}] nf1[{0, 0}, {All, 2.1}] gives ...
284 views

### Symbolic sum of Stirling numbers gives wrong answer

Bug introduced in 9.0.1 or earlier and fixed in 10.4.1 This issue originated from my attempt to answer a question on MathOverflow: ...
403 views

### Shading a region where an inequality is satisfied

I'm creating solution sets for a calculus course and need to shade the region in $\mathbb R^2$ such that $x^2 < y < x^4$. This is what I have so far: ...
108 views

### MapAt with Replace(All) causing kernel crash

Bug introduced in 10.1 and fixed in 10.2 I wanted to roll a function that works like /. but only acts on the very first match it encounters. ...
457 views

Why does this work: Graphics[{Circle[{0, 0}, -Pi/4]}] But this doesn't? Graphics[{Circle[{0, 0}, N[-Pi/4]]}] Telling me: ...
47 views

### Unit of output changes when constant quantity is moved over integral

Why do these two expressions give the same result in different units? In: Integrate[ gravitationalAcceleration Quantity[1, "g/m^3"] fluidArea h, {h, 0, height}] ...
172 views

### Why do singularities disappear when performing convolutions with the Dirac Delta function?

I am attempting to perform a convolution involving the Dirac Delta function: $\int_{-\infty}^{\infty} \frac{1}{t+1} \cdot \delta(t+1)\ dt$ I would expect that the result of this integral is ...
112 views

### How to Discretize Tube

Is there a way to outline text? In this topic,The BoundaryDiscretizeGraphics can Discretize a Text unexpectedly,It's amazing me,so as a same method I want to ...
103 views

### Strange kernel segmentation fault in Integrate

Bug introduced in 8.0 or earlier and persisting through 10.4 Define tointegrate = D[V[y1[t], y2[t]], y2[t]] D[V[y1[t], y2[t]], {y1[t], 2}] and try to find its ...
181 views

### Front ends gone wild with named slots

Bug introduced in version 10, persisting through 10.3 Assume the following simple expression {#"Test"}& Now go in front of the ...
89 views

### TableDirections example produces an error message

Bug introduced in 10.0 and fixed in 10.3 Can anyone replicate this? In Mathematica 10.2 on Win 64: ...
382 views

### Bug in splitting sum

I was trying to evaluate the following sum. $$\frac{2}{m}\sum_{\substack{\text{odd }k\\1\leq k\leq m-1}} f(\frac{m+2+\sqrt{m^2-4k+4}}{2})+f(\frac{m+2-\sqrt{m^2-4k+4}}{2}).$$ And I wrote the ...
531 views

### Cannot get nearest neighbors from Nearest

Bug introduced in 10 and fixed in 10.3 There still persists the failure to return 30.72 (another bug according to Daniel Lichtblau but from the developer's point of view it may be a feature). <...
221 views

### Is it a bug in Limit?

Bug introduced in 9.0 and fixed in 10.0.0 Mathematica 9 on Windows and WolframAlpha says Limit[Sin[Sqrt[x+1]]-Sin[Sqrt[x]],x->Infinity] is Interval[{-2,2}]....
340 views

### How to speed up TextJustification in Mathematica 10

Based on this question: - Version 7 print environment - I set up two 10 page test documents in version 7.0.1 and version 10.1. The version 7 document exported to PDF in 4.18 seconds whereas the ...
101 views

### errors in CUDA example

It seems that there are some errors in the documentation page Consider these functions in the documentation CUDA Programming. However, I'm not a expert in CUDA nor C, could you check whether these are ...
131 views

### ClipPlanes on Translated 3D objects crash front end

Bug introduced in 10.1 or earlier and persists through 10.4.1 Applying Translate to a simple 3D object (e.g. Pyramid) along ...
329 views

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254 views

### error with NIntegrate and RegionPlot

Bug introduced in 10.2 or earlier and persisting through 10.2 or later Here's a simplified example of what I'm trying to do: ...
120 views

Bug introduced in 10.2 or earlier and fixed in 10.3.0 I am using Mathematica student edition, version 10.2. When I use the command ...
313 views

### No help from ?-command

I recently upgraded to Mathematica 10.2, and there seem to be a problem with the help system. When typing ?Integrate I get the following output ...
104 views

### Indexed and array-valued interpolations

Bug introduced in 10.1 or earlier and persisting through 10.3.0 or later Using Indexed on an InterpolatingFunction leads to ...
108 views

### ViewVector requires click before behaving with Graph3D (Also, viewing 3D subgraph “head on.”)

I want to produce 3D subgraphs that looks "head on" at the remaining vertices, held in their original positions via VertexCoordinates. The default viewpoint is not ...
14k views

### Mathematica 10.0.x freezes in Initializing kernels

Bug caused by paclet update and fixed by paclet update. I updated to Windows 10 and have been running Mathematica fine on it for over a month. For some reason, it has just stopped working. I don't ...
151 views

### Manipulate: strange behavior of Manipulator

Bug introduced in 10.2 and fixed in 10.3 Consider this simple code: Manipulate[n, {n, 1, 5}] When we evaluate it, we'll get Now try to click on the little ...
99 views

### Expanding PolyGamma function error

Bug introduced in 6.0 or earlier and fixed in 10.3.0 For large half-integer arguments of the PolyGamma[] function, ...
235 views

### ListLinePlot Filling Wrong

Bug introduced in 8.0 or earlier and persisting through 10.3 or later. I used ListLinePlot to plot data from .csv files. However, the y-values from Graph 1 do ...
162 views

### Why am I getting different answers for an integral depending on method?

I'm trying to carry out an integral and I'm finding different answers depending on which method I choose to integrate with. I assume this has something to do with divergent pieces but I don't ...
298 views

### Color degrades when using Copy As Bitmap

I have discovered a problem that affects my use of Mathematica. When I use the menu command Edit > Copy As > Bitmap the colors in the copy are subtly degraded. To make this more apparent I copied ...
79 views

### How to export to NetCDF format

Consider I have a scalar field on a grid f(x,y), where x and y can take values ...
105 views

### FullSimplify on TransformedDistribution

Bug introduced in 8.0.0 and fixed in 10.3.0 Could someone check that I haven't gone mad? I would like to take the maximum of two $[0, 2 \pi]$ independent uniform random variables. ...
111 views

### GraphDistance gives incorrect result in weighted multigraph [closed]

Bug introduced in 10.0 and persisting through 10.3 Multigraph support was introduced in 10.0 There are bugs in Graph on Mathematica 10.1. For example, ...
103 views

### Issues adding properties to multigraph

Unsupported Functionality (loosely, a bug) Mathematica (as of 10.4.1) does not support multi-graph where edge properties vary between two nodes that share multiple edges. Although this is not ...
182 views

### Reading a HDF file im Mathematica

Bug introduced in 8.0 or earlier and persisting though 10.2 On OS X, the problem is present in 9.0 but not in 10.0, 10.1 or 10.2. I am trying to read a HDF file in Mathematica 9 on OS X and get ...
62 views

### Reduce return a strange result for solving a equation with radical

Reduce[1/Sqrt[x] == x + 1/(Sqrt[2] + Sqrt[3]), x] the output is unreadable and include the symbol ReduceCADAlgVar[1].
72 views

### Reduce doesn't solve this equations with condition

Reduce[{4==Abs[-1+2 Cos[2A]+2 Cos[2B]+2 Cos[2(A+B)]]},{A,B},Reals] worked well, but ...
453 views

### Nintegrate has memory leak

Bug introduced in 6.0 and fixed in 10.2.0 NIntegrates uses memory and does not release it. For long loops with NIntegrate ...
358 views

### Front end crash on Export in 10.2 on OS X

Bug introduced in 10.2.0 and fixed in 10.3.0 Appears to be specific to OS X Mathematica 10.2 is reliably crashing for me when trying to export a pdf that has text with ligatures. For example: <...
126 views

### Strange Error on Fresh Kernel (10.2)

Bug introduced in 10.1 I wrote a helper function to format real numbers in a certain format for writing .dbf files here. It relies on a new function to 10.1 - ...
212 views

### ReplaceAll problem

Bug introduced in 10.1 and persisting through 10.2 or later Confirmed, as bug, by WRI: [CASE:3402234] I am trying to combine terms of the type ...
76 views

### Why does NotebookDelete fail on cells with Copyable set to False? Bug?

Bug introduced in 9.0 or earlier and fixed in 10.3 Consider this: ...
185 views

### Mathematica 10.2 break downs when StreamPlot`-ing

Bug introduced in 9.0.0 and persisting through 10.2 or later This code meets error: ...
110 views

### Where is the other half of my fourth degree Bézier curve?

Bug introduced in 10.0.0 and fixed in 10.2 When I enter the following command, half of the fourth-degree spline is missing from the graph (i.e. it doesn't touch the last point). Is this a bug in ...
223 views

### Listable compiled function crashes the kernel with “no more memory available”

Bug introduced in 9.0.0 and fixed in 10.3 I am trying to speed up a function that involves continued fractions. Since ContinuedFraction cannot be compiled and ...
208 views

### SymplecticPartitionedRungeKutta shows strange error

Bug introduced in 9.0 or earlier and persisting through 10.2 or later I tried to solve Hamiltonian system ($Q$ is a vector of all generalized coordinates, $P$ - of generalized momentum)  \frac{\...
166 views

### Possible bug in VonMisesDistribution?

Bug introduced in 10.2 or earlier and fixed in 10.3 Observe: ...