Question

Dada a função f : R→ R definida por f (x) = -3x + 1, determine f (-2):

a) f ( -2 ) = 3
b) f ( -2 ) = 4
c) f ( -2 ) = 6
d) f ( -2 ) = 7

Answer 1

d) f(-2) = 7

f(-2)= -3x+1
-3×(-2)+1=6+1= 7

Answer 2

Oie, Td Bom?!

■ Resposta: Opção D.

• f(x) = - 3x + 1

f(- 2) = - 3 . (- 2) + 1

f(- 2) = 3 . 2 + 1

f(- 2) = 6 + 1

f(- 2) = 7

Att. Makaveli1996