Lecture
Graphs: Injection and Surjection
Description
This lecture covers the concepts of injectivity and surjectivity in functions, using graphical representations to determine if a function is injective or surjective. It explains the criteria for injectivity and surjectivity, showing how horizontal lines intersect the function's graph. The lecture also explores different scenarios where a function can be injective, surjective, or both, providing visual examples to aid in understanding.
Official source
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