Question

resolver a funçãoo f (x) -x^2+2

Answer 1

0 = -x² +2
-2 = -x²
√2 ± = x

→ Gráfico ?

a < 0

•Concavidade pra cima

$\mathsf{Xv = \frac{-b}{2a}}$

0/2*-1

0

$\mathsf{\Delta=b^2-4ac}$

0 -4 * -1 * 2

8

$\mathsf{Yv = \frac{-\Delta}{4a}}$

-8/4*-1

2

•Vértice {0 , 2}

(Xv , Yv + 1/4a)

2 + 1/[4 *(-1)]

(8 -1)/4

7/4

• Foco {0 , 7/4}