Question

Seja : ℝ → ℝ a função definida por () = 5 + 2. Determine:

a) f(4)

b) f(-3)

c) f(x) = 72

d) 2f(0) – f(1)​

Answer 1

Explicação passo-a-passo:

F(x)= 5x+2

(A) F(4)= 5.4+2= 20+2= 22

(B) F(-3)= 5.(-3)+2= -15+2= -13

(C)F(x)= 5x+2=72

5x=72-2

5x=70

x= 70/5

x= 15

(D) F(0)= 5.0+2= 0+2= 2

F(1)= 5.1+2= 5+2= 7

2f(0)-f(1)= 2.2-7= 4-7= -3