Question

2) Dada a função f(x) = -3x + 15, calcule: a) f(-6)
b) f(1/6)​

Answer 1

Oie, tudo bom?

Seja a função f(x) = - 3x + 15.

a) Sendo f(- 6):

f(- 6) = - 3 . (- 6) + 15

f(- 6) = 3 . 6 + 15

f(- 6) = 18 + 15

f(- 6) = 33

b) Sendo f(1/6):

f(1/6) = - 3 . 1/6 + 15

• Simplifica por 3 (mdc).

f(1/6) = - 1/2 + 15

f(1/6) = - 1/2 + 15/1

f(1/6) = - 1/2 + (15 . 2)/(1 . 2)

f(1/6) = - 1/2 + 30/2

f(1/6) = (- 1 + 30)/2

f(1/6) = 29/2

f(1/6) = 14,5

Att. NLE Top Shotta