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The relations f:A->B and g:B->C are tunctions which are both one-to-one and onto. Show that (g@f) is (i) one-to-onc (ii) onto

The relations f:A->B and g:B->C are tunctions which are both one-to-one and onto. Show that (g@f) is (i) one-to-onc (ii) onto

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