2. A. Indicate whether the following functions are: 1-1, onto, total by circling all valid options. The domain and codomain are specified. Justify briefly. (i) f(x)=x. Domainis N.Codomainis N. 1-1 Onto Total (ii) f(x)=x2.Domainis N.Codomainis N. 1-1 Onto Total (iii) f(x)= x+1. Domain is Z+. Codomain is Z+. 1-1 Onto Total (iv) f(x)= [x/2]. Domain is N. Codomain is N. 1-1 Onto Total

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