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Math · Advanced Math
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5. 15 marks) For each of the following functions, write down the domain, codomain and image. Also state whether or not the function is injective (one-to-one) and/or surjective (onto its codomain). Briefly explain your answer, but a formal proof is not required (a) f: Z z given (ar) (-1) by (b) g R R given f (ar) sin (ac) cos(r) by (c) h: fo, 1,2,3) 1,0, 1) given h(o) o, h(1) h(2) 0, h 3 1 by 1,
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