Question

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

Answer 1

a)
• g(3) = -2.3 + 5 = -1
• f(2) = 2.2 + 12 = 16
3x + 7 = -5 -> x = -4
• p(-5) = -4.(-4) + 11 = 27
(-1) + 27 - 16 = 10

b)
• f(-2) = 2.(-2) + 12 = 8
• g(4) = -4.(4) + 5 = - 11
8 + (-11) = -3

c)
• g(-1) = -2.(-1) + 5 = 2
x - 3 = 4 -> x = 7
• h(4) = 3.7 + 1 = 22
2 + 22 = 24