Linguaphile is a simplistic command linemachine translator designed to be easy to use. It differs from dictionaries in that it analyzes sentence's contruction before translation. It is open source, platform independent, and programmed in perl. Currently, Linguaphile supports 56 languages. It is similar to GPLTrans or Traduki. Linguaphile also has a web interface.
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Note that when computing roots numerically, the usual form of the quadratic formula is not ideal. See Loss of significance for ...