To enable MathJax, Add

<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"> </script>in the blog text in blogger. Now some equation here.

\[

|\mathbf{h}_1| = \mathbf{h}\cdot \mathbf{e}_1

= |\mathbf{h}| |\mathbf{e}_1| \cos \alpha

= \cos \alpha

\]

becomes \[ |\mathbf{h}_1| = \mathbf{h}\cdot\mathbf{e}_1 = |\mathbf{h}| |\mathbf{e}_1| \cos \alpha = \cos \alpha \] Awesome.

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