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Express g(f(x)) and f(g(x)), if they exist, as sets of ordered pairs.

f= {(3,8),(2,5),(4,-5),(9,3)}
g= {(9,2),(-5,3),(5,9),(8,10),(1,9)}

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g(f(x)) = {g(8),g(5),g(-5),g(3)}
= {10,9,3}
g(3) is undefined

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