Question

Seja R2 (Ré dada a função por f (x) = (x2 + 1) / x. Qual o valor de f (3) + f (1/3)?​

Answer 1

Primeiro calcula-se f(3) e f(1/3)

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= 1+9/9 /1/3= 10/9/1/3= 10/9×3/1= 30/9=10/3

Agora soma f(3) +f(1/3)

10/3+10/3= 20/3