Suppose f:A-->B and g:B-->C are both injective. Prove: g composed with f :A-->C is injective
Follow Math Help Forum on Facebook and Google+
Originally Posted by GoldendoodleMom Suppose f:A-->B and g:B-->C are both injective. Prove: g composed with f :A-->C is injective $\displaystyle g(f(x)) = g(f(y)) \implies g(x) = g(y) \implies x=y$
View Tag Cloud