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# function and set, help please

1. Let f;X--->Y be a function X={0,1,2}, Y={3,5,7,9} f(0)=7, f(1)=3, f(2)=7. Fing a image f(A) and preimage f^-1(B), where A belongs to X, B belongs to Y are the following subsets A=X, B={5,7}. Thank you
2. (Original post by Rose86)
...
Looking at your previous threads, you just seem to post questions with no further explanation. Do have a read of the posting guide - thread at top of forum.
3. (Original post by ghostwalker)
Looking at your previous threads, you just seem to post questions with no further explanation. Do have a read of the posting guide - thread at top of forum.
Ok. Thanks
4. (Original post by ghostwalker)
Looking at your previous threads, you just seem to post questions with no further explanation. Do have a read of the posting guide - thread at top of forum.
loooooool burn
5. (Original post by Jane122)
loooooool burn
Sorry?

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