Let G be a group with operation and H be a group with operation f: G H is a mapping that has properties : V x, y = G, apply f(x * y) = f(x) of (y) f(x-¹) = f(x)-1 show that a) K = {x EG : f(x) = еH} is a subgroup of G eµ} b) R = {f(x) EG : x E G} is a subgroup of H. o. Let's say anyway

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