An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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first-order differential equation
  هموگش ِ دگرسانه‌ای ِ رایه‌ی ِ نخست  
hamugeš-e degarsâne-yi-ye râye-ye naxost
Fr.: équation différentielle du premier ordre  

A → differential equation containing only the first → derivative. For example, dy/dx = 3x and 2y(dy/dx) + 3x = 5.

See also: → first; → order; → differential; → equation.