MHB Math Helper
- Jan 29, 2012
I quote a question from Yahoo! Answers
I have given a link to the topic there so the OP can see my response.Let f: A --> B. Prove that Iy o f = f
Here what I've got. Let, x is in X. Then there is a y in Y such that f(x) = y
=> Iy o f = Iy o f(x) = Iy(f(x)) = Iy(y). Please tell me what am I doing wrong in this question and how would you solve this? Thanks.