Write out all functions f : { 1 , 2 } { a , b , c , d } (in two-line notation). How many functions are there? How many are surjective? How many are injective? How many are bijective?
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Write out all functions f-{1-2}{a-b-c-d} (in two-line notation)- How m.docx
1. Write out all functions f : { 1 , 2 } { a , b , c , d } (in two-line notation). How many functions are
there? How many are surjective? How many are injective? How many are bijective?