Define as follaws: For every A in , the number of elements in A.
a. Is F one-to-one? Prove or give a counterexample.
b. Is F onto? Prove or give a counterexample.
Whether is one-to-one or not.
is defined as follows:
For all in , the number of elements in .
In one-to-one function, distinct elements in domain are mapped with distinct elements in co-domain.
Whether F is onto or not.
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