مجال الدالة الجذرية. دالة تربيعية

One reason is that 2 is the first element in more than one ordered pair, 2, B and 2, C , of this set
Hughes-Hallett, Deborah; Connally, Eric; McCallum, William G Lord, Nick, "Golden bounds for the roots of quadratic equations", Mathematical Gazette 91, November 2007, 549

مجـال الدالة

Two other reasons, also sufficient by themselves, is that neither 3 nor 4 are first elements input of any ordered pair therein.

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مجال جذر تربيعي
أنواع الدوال .
فيديو الدرس: مجال ومدى الدالة الجذرية

دالة تربيعية

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8
دالة أسية
دالة
شارح الدرس: مجال الدوال الكسرية