If and are functions and is onto, must g be onto? Prove or give a counterexample.
If are two functions and is onto, then whether must be onto or not.
are two functions.
A function is said to be onto function if each element in co-domain is mapped with atleast one element in domain.
Consider that is onto, where are two functions.
The objective is to show that is onto.
Since is onto, so for such that
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