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function and set, help please

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

Reply 1

ghostwalker

Original post by Rose86

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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.

Reply 2

Rose86

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

Reply 3

Jane122

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.