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) f(3)
B) g(10)
C) h(8)
D) g(3)+p(-5)

Answer 1

Oi

f(3) = 2*3 + 12 = 18

g(10) = -20 + 5 = -15

h(x - 3) = 3x + 1

w = x - 3
x = w + 3

h(w + 3) = 3*(w+3) + 1 = 3w + 10
h(x) = 3x + 10
h(8) = 24 + 10 = 34

p(3x + 7) = -4x + 11

w = 3x + 7
3x = w - 7
x = (w - 7)/3

p((w-7)/3) = -4*(w-7)/3 + 11 = (-4w + 28 + 33)/3

p(x) = (-4x + 61)/3

g(3) = -6 + 5 = -1
p(-5) = (20 + 61)/3 = 27

g(3) + p(-5) = 26 

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