To get MathJax to work in Blogger, just go to your Blogger account, click "Design" (top right of the page), and then "Edit HTML". After the first
<head> you see, paste<script src='http://cdn.mathjax.org/mathjax/latest/MathJax.js' type='text/javascript'> MathJax.Hub.Config({ HTML: ["input/TeX","output/HTML-CSS"], TeX: { extensions: ["AMSmath.js","AMSsymbols.js"], equationNumbers: { autoNumber: "AMS" } }, extensions: ["tex2jax.js"], jax: ["input/TeX","output/HTML-CSS"], tex2jax: { inlineMath: [ ['$','$'], ["\\(","\\)"] ], displayMath: [ ['$$','$$'], ["\\[","\\]"] ], processEscapes: true }, "HTML-CSS": { availableFonts: ["TeX"], linebreaks: { automatic: true } } }); </script>
You're done! You can now use the usual
$...$ or \(...\) for inline equations, and $$...$$ or\[...\] for equations that are centered in their own line.
Time for an example:
\[
\cos^2\theta-\sin^2\theta=\cos 2\theta.
\] The above script loads AMSmath and AMSsymbols so that the macros defined in these popular packages are available for use in your blog.
UPDATE: Equations can now be numbered and referred to. For example, in Newtonian gravity we have
\begin{equation}\label{eq:gravt}
F=G\frac{mM}{r^2}.
\end{equation}Also,
\begin{equation}\label{eq:gravo}
F=mg,
\end{equation}and so equations (\ref{eq:gravt}) and (\ref{eq:gravo}) lead to\[
g=G\frac{M}{r^2},
\]assuming the equivalence of inertial and gravitational mass.
\[
\cos^2\theta-\sin^2\theta=\cos 2\theta.
\] The above script loads AMSmath and AMSsymbols so that the macros defined in these popular packages are available for use in your blog.
UPDATE: Equations can now be numbered and referred to. For example, in Newtonian gravity we have
\begin{equation}\label{eq:gravt}
F=G\frac{mM}{r^2}.
\end{equation}Also,
\begin{equation}\label{eq:gravo}
F=mg,
\end{equation}and so equations (\ref{eq:gravt}) and (\ref{eq:gravo}) lead to\[
g=G\frac{M}{r^2},
\]assuming the equivalence of inertial and gravitational mass.
