# All Questions

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### I'm trying to make an internet radio alarm clock

I'm trying to make an alarm clock which opens a website. I have something which works but it is imprecise and generally quite ugly ...
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### An efficient way to compare two matrices

I have two matrices mat1 and mat2, both are results from different algorithms that are supposed to calculate the same result. The nmax is around 300, the q varies from 0.001 to 1. ...
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### FindSequenceFunction for sum of hypergeometric terms

Mathematica's built-in function FindSequenceFunction is quite good at recognizing hypergeometric terms, i.e. terms $c_k$ for which $c_{k+1}/c_k$ is a rational ...
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### How can I simplify this implicit equation to an explicit equation

How can I simplify this implicit equation to an explicit equation: Tan[5 y/12] - (7 y/((x)^2 + (y)^2 - (3.5)^2)) == 0 i.e: $y=f(x)$ where $y$ is a explicit ...
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### Basis for the intersection of vector spaces

The MuPAD Notebook Interface provides the linalg::intBasis function: http://www.mathworks.com/help/symbolic/mupad_ref/linalg-intbasis.html How can I get the same ...
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### Determine if a variable appears in an expression or not?

Consider an arbitrary expression expr. This expression may contain arbitrary data, like integers, variables, implicit functions etc. Now, I would like to determine ...
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### Can't find the limit of this complicated expression

Here is the limit I am trying to calculate ...
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### FreeQ and arguments of Hypergeometric2F1

I was trying to use FreeQ to test for the presence of Hypergeometric2F1 functions in my expressions. I encountered the following ...
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### Derivatives of functions with arbitrary number of variables?

I am trying to define a function f[x1,x2,...,xn] with n integer but not specified. And then I would like this funktion to behave ...
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### What is the causing these colored marks to appear in my Mathematica notebook?

I'm particularly annoyed with the black ovals that occasionally obscure parts of the input as I'm typing: I have also observed the appearance of rectangular blue marks with similar behavior: ...
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### Weird behavior of conditions when using OptionsPattern and OptionValue

I'm trying to define a function that is evaluated differently depending on its options. This code ...
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### AutoGeneratedPackage Formatting

If you do Ctrl+Shift+o you open an option inspector. And then you can enable ...
39 views

### Can Listplot output data to an image whilst leaving axes and labels as vectors? [duplicate]

Question: Can Listplot be set to render the data as an image whilst leaving axes and labels as vectors when saved as a PDF? Context: I have around 100,000 points in my listplot which when saved to a ...
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### Mathematica 10 is shuttingdown many times [on hold]

I run mathematica 10 on mac osx 10.9. It shutdown many times. I do not understand what happen. What is the problem. Any clarification?
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### A constraint to RandomReal for sum of numbers equal to arbitrary n

I want to generate some random numbers but respect a constraint. So I use RandomReal[{0,1},N,WorkingPrecision -> 2] I want to fix a constraint in order ...
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### How to derive SinglePredictionBands from a NonlinearModelFit model

I have found NonlinearModelFit to be extremely useful in my work. Here I have fit 4 points to a function and am being asked to explain how the 95% SinglePredictionBands associated with the plot below ...
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### Copying an “upright” fraction and pasting it gives a “flattened” fraction

I use Mathematica 10 on OSX Yosemite I copied (command+C) an "upright" fraction like in an input line and pasted (command+V) it in another. But, it gave a "flattened" fraction like . Is there a way ...
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