Question 1179550
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Prove that if f : A → B is a function from A to B, then f ◦ iA = f and iB ◦ f = f. 
(iA: inverse of A).
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This statement  (in  BOTH  its parts)  is  INCORRECT.




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<U>Comment from student</U> : If you think is "incorrect", please don't respond let someone else try to help. Thank you.




<U>My response</U>.  &nbsp;&nbsp;If I do not respond, &nbsp;you will &nbsp;NEVER &nbsp;know that your post is incorrect.



THEREFORE, &nbsp;&nbsp;all that you should/need to respond is to say "THANK YOU" &nbsp;to me for pointing errors in your post.

After that write the dot  &nbsp;" . "  ; &nbsp;&nbsp;then &nbsp;<U>STOP at this point</U> &nbsp;and do not write nothing else.



&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Do not try to teach me how to react to your posts.



Do not try to express your sujjestions about my teaching, &nbsp;because you do not know and do not understand the subject.


It would be much better, &nbsp;if you ask your questions instead of posting your comments about my teaching.




Have a nice day (!)



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Your comment that you posted to me, reminds me a driver on a highway lane, &nbsp;who, &nbsp;instead of going forward, 
turns on the reverse transmission and moves his car backward in this lane, &nbsp;while and where all other drivers still continue move forward.