How to prove something is surjective?

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  1. Proofing One to One and Onto Functions Using the Definition :

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  3. How to prove a function is an injection (Screencast 6.3.2) :

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  6. How to Prove a Function is Surjective(Onto) Using the Definition :

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  7. Injective(one-to-one), Surjective(onto), Bijective Functions Explained Intuitively :

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  8. How would I prove that f(x) = [x] is surjective, where [x] denotes the bracket function I know how to prove that something is surjective, but I'm
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  10. Proof that if g o f is Surjective(Onto) then g is Surjective(Onto) :

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  12. I need to decide if the function $t$ is injective and/or surjective and prove it. the question is how should I (...) Showing if a function is injective or surjective
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  13. (Abstract Algebra 1) Surjective Functions :

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  16. Determine whether a function is 1 to 1 :

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