Just for curiosity: Inverting a matrix (specially if it's very big) is a
very expensive process (expensive in time). I think that inversion of huge
matrices is used as one test with supercomputers to test their speed.
  So it's not very simple... :)

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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