Question

Considere as funções com domínio dos números reais dadas por f(x) = -x + 5 e g(x) = 2x + 2 Calcule o valor de : F(0) + g(1) ________ F(2)

A 3.
B4.
C9.
D5.
E 7

Answer 1

C) 9

f(0) +g(1) = 5 +4 =9

F(2) = -2 + 5 =3

Explanation:

Given f(x) = -x + 5

g(x) = 2 x + 2

Put x=0 in f(x) = -x +5

f(0) = -0 +5 =5

g(x) = 2 x + 2

Put x= 1

g(1) = 2(1) +2

g(1) = 4

f(0) +g(1) = 5 +4 =9

b) f(x) = -x +5

put x = 2

F(2) = -2 + 5 =3