[Tex/LaTex] How to write a recurring decimal in LaTeX

math-mode

Title says it all. Since I am a newbie, I don't know how to do this.

Any help?

Best Answer

If you're thinking of using a horizontal bar over a recurring group of decimals, you could use the \overline command:

\documentclass{article}
\begin{document}
$\frac{1}{7}=0.\overline{142857}$
\end{document}

enter image description here

Related Solutions

[Tex/LaTex] how to write maximize over multiple conditions

You can use \substack, provided by the amsmath package:

\documentclass{article}
\usepackage{amsmath}% http://ctan.org/pkg/amsmath
\begin{document}
\[
  \max_{0 \leq x \leq 1} f(x)
\]

\[
  \max_{\substack{0 \leq x \leq 1 \\ a \geq y \geq b}} f(x)
\]
\end{document}

Substack as limits

It works similar to an array where multiple lines are separated using \\. Another alternative would be to use the \mathop - it produces the same result as above:

\documentclass{article}
\usepackage{amsmath}% http://ctan.org/pkg/amsmath
\begin{document}
\[
  \mathop{\max_{0 \leq x \leq 1}}_{a \geq y \geq b} f(x)
\]
\end{document}

\mathop makes it's argument an operator, which allows for the traditional limit placement using _ and/or ^ which adds it below/above the operator.

[Tex/LaTex] How to write ‘decimal to Binary convertion ‘ in Latex

Try

\documentclass{article}

\usepackage{expl3}

\ExplSyntaxOn
\cs_new:Npn \displayasdecimal#1 {(#1) \sb {10}}
\cs_new:Npn \displayasoctal #1 {(\int_to_oct:n{#1}) \sb 8}
\cs_new:Npn \displayasbinary #1 {(\int_to_bin:n{#1}) \sb 2}
\ExplSyntaxOff

\begin{document}

$\displayasdecimal{311}=\displayasoctal{311}=\displayasbinary{311}$

\end{document}

This gets you

If you actually want to do the calculation automatically and dislay it as in the top of your picture then that would be possible too using expl3.

Best Answer

Related Solutions

[Tex/LaTex] how to write maximize over multiple conditions

[Tex/LaTex] How to write ‘decimal to Binary convertion ‘ in Latex

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