Question

seja F: IR*- IR a função definida por F(x) = x2 + 1 sobre x. qual o valor de F(2) + F( 1 sobre 2)?

Answer 1

Explicação passo-a-passo:

f(x)= (x²+1) / x

f(2) = (2²+1) / 2

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

f(2)= 5 / 2

f(1/2) = [ (1/2)²+1] / (1/2)

f(1/2) = [ (1/4 + 1 ] / (1/2)

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

f(1/2) = 5/4 . 2

f(1/2) = 10/4

f(1/2) = 5 / 2

f(2) + f(1/2) = 5/2 + 5/2 = 10/2 = 5

Answer 2

f(x)= (x²+1) / x

f(2) = (2²+1) / 2

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

f(2)= 5 / 2

f(1/2) = [ (1/2)²+1] / (1/2)

f(1/2) = [ (1/4 + 1 ] / (1/2)

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

f(1/2) = 5/4 . 2

f(1/2) = 10/4

f(1/2) = 5 / 2

f(2) + f(1/2) = 5/2 + 5/2 = 10/2 =5

resposta:5