Question

Considere a função f: R - 1 --> R tal que f(x) = x+1/x-1
O valor de f(2) . f(3) . f(4) =

a) 7 b) 10 c) 12 d) 15 e) 30

Answer 1

Explicação passo-a-passo:

f(x)= x+1/x-1

f(2)= 2+1/2-1= 3/1= 3

f(3)= 3+1/3-1= 4/2= 2

f(4)= 4+1/4-1= 5/3

f(2) . f(3) . f(4)=

3 . 2 . 5/3=

30/3=

10

item b) 10