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Let x = {1,2,3} and y = {7,10,13,18}. Show that the function f : x → y defined by f(x) = 3x+4 is one to one but not onto.

Let x = {1,2,3} and y = {7,10,13,18}. Show that the function f : x → y defined by f(x) = 3x+4 is one to one but not onto.

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