octave: Mathematical Equations

 
 11.10.2.11 Mathematical Equations
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 One can insert LaTeX inline math, surrounded by single ‘$’ signs, or
 displayed math, surrounded by double ‘$$’ signs, directly inside
 sections.
 
      ##
      # Some shorter inline equation $e^{ix} = \cos x + i\sin x$.
      #
      # Or more complicated formulas as displayed math:
      # $$e^x = \lim_{n\rightarrow\infty}\left(1+\dfrac{x}{n}\right)^{n}.$$