An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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second approximation
  نزدینش ِ دوم  
nazdineš-e dovom
Fr.: deuxième approximation  

Math: In calculus, limiting an equation to its → second derivative,
for example: ex≅ 1 + x + x2/2. Also called linear approximation. → first approximation.

See also: → second; → approximation.