Are the following statements true for all functions f and for all subsets A and B of the domain of f? () {f(x): E A}- {f(x): z E B} is a subset of {f(x): x € A - B} (ii) {f(x):x E A- B} is a subset of {f(x) : a E A} - {f(x):z € B} O Yes for (i). Yes for (ii). 47 OYes for (i). No for (ii). O No for (i). Yes for (ii). O No for (i). No for (ii).

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