Q2): Functions and Sequences 1. Determine whether each of these functions from {a,b,c,d} to itself is: a) one-to-one b) Onto (6pts) i) f(a)=b,f(b)=a,f(c)=c,f(d)=d ii) f(a)=d,f(b)=b,f(c)=c,f(d)=d