If the functions f and g are given by f=...

If the functions `f` and `g` are given by `f={(1,\ 2),\ (3,\ 5),\ (4,\ 1)}` and `g={(2,\ 3),\ (5,\ 1),\ (1,\ 3)}` , find range of `f` and `g` . Also, write down `fog` and `gof` as sets of ordered pairs.

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