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Questions tagged [show non-injectivity]

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DigitalEagle DigitalEagle Mon Oct 28 2024 | 6 answers 1311

How do you show something is not injective?

I'm trying to understand how to demonstrate that a function is not injective. I know injective means every element in the domain maps to a unique element in the codomain, but how do I prove it's not the case?

How do you show something is not injective?

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