Difference between revisions of "Help:Math"

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==Intro==
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==LaTeX==
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You can enter LaTeX equations by enclosing them in <nowiki><math>...</math></nowiki> tags. This uses the [http://www.mediawiki.org/wiki/Extension:Math Math extension]. For LaTeX math help, see:
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* [http://www.latex-project.org/guides/ LaTeX documentation]
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** [http://ctan.tug.org/tex-archive/info/lshort/english/lshort.pdf The Not so Short Introduction to LaTex] - with a very complete chapter on typesetting mathematical formulas
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===Examples===
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<nowiki><math>\sqrt[3]{a x + x^2}</math></nowiki> produces <math>\sqrt[3]{a x + x^2}</math>
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The acceleration of a solar sail due to solar pressure <math>\vec a_s</math> given the position vector from the sun to the sail <math>\vec r_s</math> is:
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<math>\vec a_s = a_c {AU^2 \over r_s^2} \left(\vec r_s \cdot \vec n\right)^2 \vec n</math>
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where <math>a_c</math> is max sail acceleration at Earth's distance from the sun (1 AU), <math>AU</math> is the length of an astronomical unit, <math>r_s</math> is the magnitude of <math>\vec r_s</math>, and <math>\vec n</math> is the unit vector normal to the sail surface.
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==Mimetex==
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''Deprecated. Please follow LaTeX instructions from now on.''
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Mathematics can be displayed on SolarSailWiki using the [http://www.forkosh.com/mimetex.html Mimetex] program, which uses a subset of the [http://www.latex-project.org/ LaTeX] math formulas.
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All you need to do is enclose a valid TeX/LaTeX formula inside <nowiki><tex>...</tex></nowiki> tags.
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Formulas will be rendered as GIF images.
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* [http://www.forkosh.com/mimetexmanual.html Mimetex documentation]
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* [http://www.latex-project.org/guides/ LaTeX documentation]
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** [http://ctan.tug.org/tex-archive/info/lshort/english/lshort.pdf The Not so Short Introduction to LaTex] - with a very complete chapter on typesetting mathematical formulas
 +
 
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Some examples:
 +
 
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<nowiki><tex>\sqrt[3]{a x + x^2}</tex></nowiki> produces <tex>\sqrt[3]{a x + x^2}</tex>
 +
 
 +
The acceleration of a solar sail due to solar pressure <tex>\vec a_s</tex> given the position vector from the sun to the sail <tex>\vec r_s</tex> is:
 +
 
 +
<tex>\vec a_s = a_c {AU^2 \over r_s^2} \(\vec r_s \cdot \vec n\)^2 \vec n</tex>
 +
 
 +
where <tex>a_c</tex> is max sail acceleration at Earth's distance from the sun (1 AU), <tex>AU</tex> is the length of an astronomical unit, <tex>r_s</tex> is the magnitude of <tex>\vec r_s</tex>, and <tex>\vec n</tex> is the unit vector normal to the sail surface.
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<!--
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==ASCIIMath Not Currently in Use==
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For the time being, ASCIIMath can be used, but MathML won't be properly displayed because of an incompatibility with Internet Explorer without MathPlayer installed.
  
 
Mathematics can be displayed on SolarSailWiki pages using the PHP version of [http://www.jcphysics.com/ASCIIMath/ ASCIIMath].
 
Mathematics can be displayed on SolarSailWiki pages using the PHP version of [http://www.jcphysics.com/ASCIIMath/ ASCIIMath].
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==Getting MathML to work==
 
==Getting MathML to work==
  
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Although the Mozilla based browsers do have [http://www.mozilla.org/projects/mathml/ MathML] support, they may require additional steps to get it working.
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For [http://www.microsoft.com/ie/ Internet Explorer], download and install the [http://www.dessci.com/en/products/mathplayer/ Mathplayer plugin.]
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Mozilla-based browsers do have [http://www.mozilla.org/projects/mathml/ MathML] support built-in, but they may require additional steps to get it working.
 
In particular, the fonts can be a problem, as discussed in this page on [http://www.mozilla.org/projects/mathml/fonts/ Fonts for MathML-enabled Mozilla].
 
In particular, the fonts can be a problem, as discussed in this page on [http://www.mozilla.org/projects/mathml/fonts/ Fonts for MathML-enabled Mozilla].
 
Take a look at that page for operating-specific instructions.
 
Take a look at that page for operating-specific instructions.
 
In general, the approach is:
 
In general, the approach is:
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* Windows - download and install the fonts required.
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* Windows - Download and install the fonts required.
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* MacOS - download and install the fonts required.
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* MacOS - Download and install the fonts required.
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* Linux - Ok. This is a bit of a pain, and will be discussed in more detail on the [[Help:MathML in Linux]] page.
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* Linux - This requires more work, so it is discussed in more detail on its own page [[Help:MathML in Linux]]. Firefox may require additional steps.
  
 
==ASCIIMath==
 
==ASCIIMath==
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This is displayed in MathML as: <am>root3 (a x + x^2)</am>
 
This is displayed in MathML as: <am>root3 (a x + x^2)</am>
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Go the the [[Sandbox]] to try it out.
  
 
Some other examples:
 
Some other examples:
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where <am>a_c</am> is max sail acceleration at Earth's distance from the sun (1 AU), <am>AU</am> is the length of an astronomical unit, <am>r_s</am> is the magnitude of <am>vec r_s</am>, and <am>vec n</am> is the unit vector normal to the sail surface.
 
where <am>a_c</am> is max sail acceleration at Earth's distance from the sun (1 AU), <am>AU</am> is the length of an astronomical unit, <am>r_s</am> is the magnitude of <am>vec r_s</am>, and <am>vec n</am> is the unit vector normal to the sail surface.
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-->

Latest revision as of 11:32, 11 June 2012

LaTeX

You can enter LaTeX equations by enclosing them in <math>...</math> tags. This uses the Math extension. For LaTeX math help, see:

Examples

<math>\sqrt[3]{a x + x^2}</math> produces \sqrt[3]{a x + x^2}

The acceleration of a solar sail due to solar pressure \vec a_s given the position vector from the sun to the sail \vec r_s is: 

\vec a_s = a_c {AU^2 \over r_s^2} \left(\vec r_s \cdot \vec n\right)^2 \vec n

where a_c is max sail acceleration at Earth's distance from the sun (1 AU), AU is the length of an astronomical unit, r_s is the magnitude of \vec r_s, and \vec n is the unit vector normal to the sail surface.

Mimetex

Deprecated. Please follow LaTeX instructions from now on.

Mathematics can be displayed on SolarSailWiki using the Mimetex program, which uses a subset of the LaTeX math formulas. All you need to do is enclose a valid TeX/LaTeX formula inside <tex>...</tex> tags. Formulas will be rendered as GIF images.

Some examples:

<tex>\sqrt[3]{a x + x^2}</tex> produces \sqrt[3]{a x + x^2}

The acceleration of a solar sail due to solar pressure \vec a_s given the position vector from the sun to the sail \vec r_s is:

\vec a_s = a_c {AU^2 \over r_s^2} \(\vec r_s \cdot \vec n\)^2 \vec n

where a_c is max sail acceleration at Earth's distance from the sun (1 AU), AU is the length of an astronomical unit, r_s is the magnitude of \vec r_s, and \vec n is the unit vector normal to the sail surface.


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