Question

Dada a função f: R-->R, definida por f(x)=2x-7 pede-se:

A) f(-2)
B) f(1/2)
C) f(3/5)
D) f(0)

Answer 1

Resposta:

a) -11

b) -6

c) -29

d) -7

Explicação passo-a-passo:

a) f(-2)= 2.(-2) -7 --> f-2)= -4 -7 --> f(-2)= -11

b) f(1/2)= 2. 1/2 -7 --> f(1/2)= 1-7 --> f(1/2)= -6

c) f(3/5)= 2.3/5 -7 --> f(3/5)= 6/5-7--> f(3/5)= -29

d) F(0)= 2.0-7 --> f(0)= -7