Question

dada a função F (x) = 2x + 1, determine a imagem quando o domínio = { -2,-1,0,1}

Answer 1

F(-2)=2x+1
y=2(-2)+1
y=-3

F(-1)=2x+1
y=2(-1)+1
y=-1

F(0)=2x+1
y=2(0)+1
y=1

F(1)=2x+1
y=2(1)+1
y=3

Answer 2

Quando x= -2:
f(-2) = 2.(-2) + 1
f(-2) = -4 +1
f(-2) = -3

Quando x=-1
f(-1)= 2.(-1) +1
f(-1) = -2 +1
f(-1)= -1

Quando x=0
f(0)= 2.0 + 1
f(0)= 0 + 1
f(0)= 1

Quando x=1
f(1) = 2.1 + 1
f(1) = 2 + 1
f(1) = 3