Question

Considere a função f(x)=1/2-x, Então f(f(f(3))) é igual a:
a) 5/3
b) 3
c) -1/3
d) -1
e) 3/5

Answer 1

f(f(f(3)))

f(3)=1/2-3

f(3)=1/2 -6/2

f(3)= -5/2

f(f(f(3)))=

f(f(-5/2))

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

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

f(-5/2)=6/2

f(-5/2)=3

f(f(-5/2))=

f(3)=

f(3)=-5/2