Question: Let f : A > B and g: h. : B > C. Prove that if f is onto and g 0 f : l1.

Let f : A > B and g: h. : B > C. Prove that if f is onto and g 0 f : l1. 0 f then 9 : '1. Let f: g : A > B and h. : B > C. Prove that. if I1 is onetoono and h. o f : h o 9 then f = 9- Lot f : A > B and g : B > C. Prove the following: (a) If f is onto and g is not onetoono then 9 o f is not onet(H)no. (b) If f is not onto and g is onetoono then 9 o f is not onto

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