Question

alguém pra mim ajudar

Answer 1

1 . f(x) = 5-x

b. f(3) = 5-3

f(3) = 2

c. f(-2) = 5-(-2)

= 5+2

f(-2) = 7

d. f(1/2) = 5-1/2

= 10-1/2

f(1/2) = 9/2

2. f(x) = x³-4/x

b. f(2) = 8-4/2

= 4/2

f(2) = 2

c. f(-2) = -8-4/-2

=-12/-2

f(-2) = 6

d. f(3) = 27-4/3

f(3) = 23/3