https://img560.imageshack.us/img560/...at22052012.jpg cvp 5
|f(x)-1|=2 i)f(x)-1=2 f(x)=3 (-5,3) (0,3) (k,3) ii)-f(x)+1= -f(x)=1 f(x)=-1 (m,-1) (z,-1) https://img521.imageshack.us/img521/...at22052012.jpg