Question

Dadas as funções reais f(x) = x² – 1 e g(x) = –x², encontre o valor de: f(–1) . g(–2). * 3 pontos a) 0 b) – 4 c) 4 d) 6 e) – 11

Answer 1

Resposta:

f(x) = x² – 1  e  g(x) = – x²,

encontre o valor de:  f(–1) . g(–2)  

f(x) = x² – 1  

f(-1) = x² – 1  

f(-1) = (-1)² – 1  

f(-1) = 1 – 1

f(–1) = 0

g(x) = – x²

g(–2) = - (-2)²

g(–2) = - 4

encontre o valor de:

 f(–1) . g(–2)

     0 . (-4)

        0

a) 0

bons estudos!