Question

4)Dadas as funções f(x)= x +4 e g(x)= -2x +3. Determine:
a)f(2)
b) g(x)= 0
c)f(3) + 2 f(4) - g(0)

Answer 1

f(x)= x +4

f(2) = 2 + 4

f(2) = 6 (resposta)

....................

g(x)= - 2x + 3

0 = - 2x + 3

- 2x + 3 = 0

- 2x = - 3 . (-1)

2x = 3

x = 3/2 (resposta)

...................

f(x)= x +4

f(3) = 3 + 4

f(3) = 12

f(x) = x + 4

f(4) = 4 + 4

f(4) = 8

g(x)= -2x +3

g(0) = - 2. 0 + 3

g(0) = 0 + 3

g(0) = 3

a expressao: f(3) + 2 f(4) - g(0)

12 + 2. 8 - 3

12 + 16 - 3

25 (resposta)