Question

Seja f : IR* -> IR à função dada por
f(x) =x2+1/x . Qual é o valor de f(3)+f(1/3) ?

Answer 1

f(3) + (1/3) = 
((3²+1)/3) + (((1/3)² + 1)/3) = 
((9+1)/3) + ((1/9 + 1)/3) = 
(10/3) + ((1/9 + 9/9)/3) = 
10/3 + ((10/9)/3) = 
10/3 + (10/9/3) = 
10/3 + 10/27 =           MMC = 27
90/27 + 10/27 = 
100/27

Answer 2

Resposta:

f(3) = 3^2+1/3 = 9+1/3 = 10/3

f(1/3) = (1/3)^2+1/1/3 = 1/9+1/1/3 = 10/9/1/3 = 10/9x3/1 = 10/3

f(3)+f(1/3) = 10/3+10/3 = 20/3

Explicação passo-a-passo: