# Tagged Questions

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429 views

### Solving Heat equation [closed]

I want to compute the exact solution of the heat equation but I got an error. u(x,t) (equation of transmition of heat) is the solution of this differential equation: $$du/dt - \alpha d^2u/dx^2 = 0$$ ...
265 views

### How to change the color of specified digits in a number?

I've been playing with numerical approximations for irrational numbers, and would find it convenient to be able to highlight where these approximations deviate from the known correct answers. For ...
58 views

### Extract Style Attributes from Style[]

Can you extract the Style attributes from a variable. For example: var = Style["aString", Bold, 24] You can get back "aString" by using ToString[var] but I am ...
323 views

### How to get back name of the number from Max function? [duplicate]

So I have this question, using a toy example: a={1,"this"}; b={2,"that"}; result=Max[0,a[[1]],b[[1]]] the result will be 2. However what I want to obtain is ...
63 views

### Avoid unnecessary truncation

Is there any way to change the general settings in Mathematica so that when I type e.g. 0.34*60000000 I get the output ...
168 views

### Padding and formatting within BaseForm

I find using BaseForm to be a little tricky. For example, if you use BaseForm and then do some additional operation all the numbers turn back into base 10, so you have do BaseForm as the "last step". ...
342 views

### Display a number in Mathematica 9 in periodic form

I want to display a rational number in Mathematica in periodic style. PeriodicForm isn't working anymore. It worked in Mathematica 5 and now I'm using Mathematica ...
116 views

### Put results in multiple columns for comparison

One thing I would like to do in many instances is arrange input/output in columns for comparison. I expect that I need to use Grid to do this, but have not been ...
593 views

### Why does Mathematica order polynomial forms in reverse from traditional order?

I could very well be missing something obvious, but this has always bugged me with Mathematica and I don't know why it does it or how to fix it. If I enter any polynomial, say, x^2 + x - 1 for ...
128 views

### Remove braces, {}, from around DynamicModule output?

Is there a way to remove the braces from the front end output associated with DynamicModule? For instance: ...
186 views

### Can I ask Mathematica to replace the arguments of my functions with a replacement rule?

I have an equation that I evaluate at some point (let's say $x=1$) that have terms of the form f[1,y] D[g[1,y],{y,2}] Is there an easy way to replace [1,y] by ...
93 views

### How do I type boxtimes?

How do I type boxtimes in Mathematica, for example $a\boxtimes b$? This symbol is used a lot in mathematics, but I found no corresponding part in Mathematica. In TeX form, I can type \boxtimes. Can ...
158 views

### Unwanted parentheses appearing in a notebook that is opened by a button

I am writing an interactive document and have an idea to make in-line buttons that on demand would create and bring up separate notebooks containing some explanations or a remindings. One example of ...
68 views

### SuperscriptBox question

I am trying to define an object type in Mathematica as follows ...
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### Rounding only reals in an expression containing, reals, integers and symbols

I am trying to make a function that would make rounding real numbers in an expression possibly consisting of real numbers, integer numbers and symbols. An example of such an expression is below: ...
291 views

### Notebook vs. DocumentNotebook; display a Notebook inline, like a DocumentNotebook

If you evaluate a DocumentNotebook[] expression in the front-end, it nicely displays inline, inside of an output cell in the current notebook: For my purposes, ...
163 views

### Why don't these styling rules work when viewed in TableForm?

m = RandomInteger[{-5, 5}, {10, 10}]; m /. {x__, y_ /; y > 0} -> Style[{x, y}, Red] % // TableForm When m without style ...
129 views

### How to apply multiple format to a list

I have a nested list like matrix = {{1.2345664, 2.38673956, 3.567846}, {0.00034554, 124.4554654, 6.34543}, {0.0000233, 244.34454, 2}} and I want to apply ...
284 views

### How can I export specific data into different pages in .PDF format?

I have made various Grid-s and arranged them column-wise in another Grid. All Grids are ...
225 views

### Export image data precision

I'm sure there is a very easy way to control this, but I have been searching for an hour now without luck. I plot a function and export it to get a table that I can use in TikZ. ...
2k views

### Formatting a number with fixed number of significant digits

I need a formatting function (say format[x_, n_]) which outputs numbers with fixed n significant digits without unnecessary dot. ...
274 views

### Formatting data tables with Grid + Dividers vs. SplitBy --> GridBy?

A quick method to format human-readable data tables with headers, is to use Grid, eg: ...