# All Questions

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### Wrapper for inexact numeric complex numbers that maintains polar form

Related question: How can I convert a complex number a+b I to the exponent form A Exp(I phi)? Mathematica insists on displaying complex number in form a+I b when ...
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283 views

### How should a beginner figure out the context to use an expert answer provided on this forum?

J.M.'s answer to Extruding along a path related to custom cross-sections appears to answer a question I have been puzzling over for some time. I am interested in producing a tube with the stadium or ...
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### Exporting large expression [duplicate]

I generated a huge mathematical expression (~200k terms, impossible to simplify yet) and want to save it for later analysis. Last time I did Export to *.nb file and ...
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I have several formulas I would like to place at specific coordinates in a Graphics object I have already created. I need to be able to choose bold or not as well ...
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### Is it possible to create Evaluatable cell which will be automatically overwritten?

Am trying to generate an Evaluatable cell which itself is an output cell which will be overwritten when the original Input cell ...
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### Storing data in the Notebook in readable form

The common problem in my theretical work is a need to import some experimental data to work with. This means that my notebook depends on some external files which makes it difficult to share it with ...
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### Working in a team in Workbench

Imagine the following scenario: user A is developing a project with documentation in workbench. She wants to share her (unfinished) work with a small group (4-5) of users (B,C,D,E) , so that all ...
1k views

### How to solve this system of equations?

I want to solve the following system of equations: $$\begin{cases} 1+\sqrt{2 x+y+1}=4 (2 x+y)^2+\sqrt{6 x+3 y},\\ (x+1) \sqrt{2 x^2-x+4}+8 x^2+4 x y=4. \end{cases}$$ I tried ...
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### Rearranging a Polynomial

In Mathematica 8.04 on Windows, I want to display a formula in standard textbook format. The formula is the variance of an $N$-security portfolio. For two securities it is: ...