Question

Seja f; IR ⇒IR a função dada por f (x)=x2+1/x qual e o valor de f(3)+f(2)

Answer 1

Olá,

f(x) = (x²+1)/x

f(2) = (2²+1)/2
f(2) = (4+1)/2
f(2) = 5/2

f(3) = (3²+1)/3
f(3) = (9+1)/3
f(3) = 10/3

f(2)+f(3) =
5/2+10/3 =
(15+20)/6 =
35/6

Resposta:

35/6

Answer 2

           $f(x) = \frac{x^2+1}{x} \\ \\ f(3) = \frac{3^2+1}{3} = \frac{10}{3} \\ \\ f(2)= \frac{2^2+1}{2} = \frac{5}{2} \\ \\ f(3) + f(2) = \frac{10}{3} + \frac{5}{2} = \frac{2.10+3.5}{6} = \frac{35}{6}$