f((f(f(x)) problem

Posted by rongmon on Mar 31, 2014; 4:48pm
URL: http://discussion-forum.276.s1.nabble.com/f-f-f-x-problem-tp7585834.html

if f(x) = 1/(1-x),  then f(f(f(x)) equals

a. 1/(1-x)

b. x

c. 1/x

d. 1-x



thanks