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Thank you so much. With \usepackage{mathtools}, the code works perfectly fine.

Lynn

Thank you so much. Now the formula looks good.

Lynn

Dear all,

I would like the range of x_1 and x_2 to be aligned at the bottom of \sum with smaller size, now the size is over big. I also tried \substack but this code even does not work.


\documentclass[a4paper,11pt]{article}
\begin{document}
$y=\sum \limits_{\begin{array} 1<x_{1}<2\\ 0<x_{2}<1 ...

Dear all,

I tried to add the matrix in a math formula, but the matrix was distorted in shape. The code I use is the following:


\documentclass[a4paper,11pt]{article}
\begin{document}
$y=\sum_{i} x_{i} \begin{bmatrix} 1 & 1 &1 \\ 1& 1 & 1\\1 & 1& 1 \end{bmatrix}$
\end{document}


Any suggestions ...

Thank you,Johannes.

Lynn

Thank you, Johannes_B. But I am not sure how to do that. Do you mean write file name as "file ending.tex" or need to download some file? Thanks a lot.

Lynn

Hello Latex Community,

I reinstalled the Tex software on my computer, the version is Miktex2.9. The problem is tex document can not be saved even I run the program as administrator. The error message is "The file could not be saved. Please check if you have write permission." The software was ...

Thanks. The problem is solved.

Lynn

Thank you, cgnieder.

There are three colored rectangulars at bottom of the page. The third one has date written inside. I'd like to write some content inside of the two boxes that are to the left of the date box. How to do this?

Any suggestion is appreciated.
Lynn

Thank you, Thorsten.

The code I used is \addfootbox{structure}{\tiny\quad 2. Box}. But TeXworks stops at this code. I do not know if the code is right or wrong. Could you please give me some suggestion about how to add text content in footbox(the colored bar that contains date)?

Lynn