Question

if f(x) = { 2+x , x>=0
2-x , x<0

Find f(f(x)) ?

Answer 1

@mahmit2012 @JFraser @akash123

Answer 2

f(x)=2+abs(x)
ff(x)=2+abs(f(x))=2+f(x)=4+abs(x)

Answer 3

f>0 so absf=f

Answer 4

f(f(x) will have two answer one is when x >=0 and x <0

Answer 5

Not quite, see, if x is less than 0, then f(x) turns out to always be greater than zero. Don't take my word for it, though :D
Try it :D

Answer 6

4+x x>=0
4-x x<0
!!!!!!!!!!!!!!!!!

Answer 7

hw 4 -x x<0 ???

Answer 8

the answer is 4+abs(x)

Answer 9

@Yahoo!!!!!

Answer 10

Yup....) thx....