Question

Matemática


Dada a função definida por :


f ( x ) = x + $\frac{1}x$


A) f ( 3 )
B) f ( -1 )
C) f ( 1 ) + f ( 2 )
D) f ( $\frac{1}{2}$ )

Answer 1

Resposta:

a) f(3) = 3+⅓ = 10/3

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

c) f(1)+f(2)

1+1/1 = 2

2+1/2= 5/2

então, f(1)+f(2) = 9/2

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