Question

7) Dadas as funções, f(x) = 2x +12, g(x) = -2x +5, h(x-3) = 3x + 1
e p(3x + 7) = -4x +11, calcule:

a) f(3) b) f(-5)

c) g(10) d) f(-1) + g(2)

e) h(8) f) g(4) + h(-1)

g) g(3) + p(-5) f(2)

Answer 1

Resposta:

a) f(3) = 2.3 + 12 = 6 + 12 = 18

b) f(-5) = 2.(-5) + 12 = -10 + 12 = 2

c) g(10) = -2.(10) + 5 = -20 + 5 = -15

d) h(8-3) = h(5) = 3.(5) + 1 = 15 + 1 = 16

e) f(2) = 2.2 + 12 = 4 + 12 = 16

f) (-1) + g(2) = (-1) + (-2).(2) + 5 = -1 - 4 + 5 = 0

g) g(4) + h(-1) = g(4) + h(-1-3) = g(4) + h(-4) = -2.4+5 + 3.(-4) +1 = -8+5 - 12+1 = -3 - 11 = -14

Explicação passo a passo: