# All Questions

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### Apply UpValues before Listability

I'm trying to modify Plus but am running into trouble with it being Listable: ...
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### How to splice together several instances of InterpolatingFunction?

I have a set of InterpolatingFunction returned by NDSolve which are valid over different (but overall continuous) domains. How ...
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### How can I calculate a limit with a free variable?

For example, when I evaluate Limit[(1 + x^n + (x^2/2)^n)^(1/n), n -> Infinity] Mathematica does not output any result. When I evaluate ...
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### What does # mean in Mathematica?

I asked Mathematica to compute the following Solve[c (1-x)^2-x^(1/4) == 0, x] and it returned this: x = Root[#1^8 c^4 - 8 #1^7 c^4 + 28 #1^6 c^4 - 56 #1^5 ...
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### Differential Equations with Matrices

I'm trying to implement the differential equation of a Cellular Neural Network in Mathematica as seen below: ...
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### How can I return a Sequence?

Recently I had the need to redefine a certain symbol in my init.m so it would be automatically omitted from any lists it appears in. I decided to redefine it to an empty sequence, e.g. ...
262 views

### Strange behaviour of OutputResponse

I am having some trouble when using OutputResponse. For instance consider the following command ...
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### Factor inside argument

How do you use Factor so that it will factor expressions inside the arguments of some bigger expression. For example Factor[ Cos[t w - t z]] gives ...
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### MATLAB-like convolution and derivation using Mathematica [duplicate]

Possible Duplicate: Discrete Convolution I would like to be able to convolve two functions of two variables in Mathematica, and then plot derivatives (or functions of derivatives) of the ...
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### Exporting Mathematica expression as SVG

I was thinking it would be nice if I could export Mathematica expressions as svg, but I am having some issues. At first blush everything seems to work fine. This piece of code does produce a svg file: ...
638 views

### Using DSolve to solve for x[t,parameter]

I'm trying to solve an ODE with two independent variables (a cannon firing from a cliff incorporating wind resistance dependent on velocity). I've tried the following for the x-component: ...