Question

Calcular f (2) + f (5) + f (-1) si f (x – 1) = 2x + 10
ayuda please

Answer 1

f (x – 1) = 2x + 10

Es lo mismo que multiplicar x2 y sumar 12.

2(x - 1) + 12 = 2x + 10

Entonces:

f (2) = 2*2 + 12 = 4 + 12 = 16

f (5) = 2*5 + 12 = 10 + 12 = 22

f(-1) = 2*-1 + 12 = -2 +12 = 10

f (2) + f (5) + f (-1)

16 + 22 + 10

48 (Respuesta)