Question

Calcula el rango de: f(x) = x² - 5x + 7​

Answer 1

Respuesta:

Rango: [ 3/4 ; + ∞ >    CLAVE c)

Explicación paso a paso:

f(x) = x² - 5x + 7

f(x) = ax² +bx + c

-b/2a = -(-5)/2(1)

-b/2a = 5/2

f(5/2) = (5/2)² - 5(5/2)+ 7

f(5/2) = 3/4

Rango: [ 3/4 ; + ∞ >