Let A and B be nonempty sets. Prove that if f: A-->B, then f o iA = f and iB o f = f. (iA --- the A is a subscript... same is for iB; indicating identities)
Please help! Thanks! (the proof is due tomorrow 12/10 at 9am...)
Let A and B be nonempty sets. Prove that if f: A-->B, then f o iA = f and iB o f = f. (iA --- the A is a subscript... same is for iB; indicating identities)
Please help! Thanks! (the proof is due tomorrow 12/10 at 9am...)