Вказати координати вершини параболи y = 2x2 − 5x + 2.
а. (5/4;−9/8)
б. (−5/4;9/8)
в. ( 5;-1)
г. ( 5/4 ; 9/8 )
Знайти область значень функції y = x2 − 1.
а. [1;+∞)
б. (−1;+∞)
в. (−∞;−1)
г. [−1;+∞)
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