 class='no'>a</span>[ , <span class='fl'>2</span>] / <span class='no'>a</span>[, <span class='fl'>3</span>]

<span class='fu'><a href='http://www.rdocumentation.org/packages/microbenchmark/topics/microbenchmark'>microbenchmark</a></span>(<span class='fu'>maha</span>(<span class='no'>X</span>, <span class='no'>mu</span>, <span class='no'>mcov</span>),
               <span class='fu'>maha</span>(<span class='no'>X</span>, <span class='no'>mu</span>, <span class='no'>myChol</span>, <span class='kw'>isChol</spa