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Algebra 15 - Functions
Functions can be thought of as mathematical machines, which when given an element from a set of permissible inputs, always produce the same element from a set of possible outputs
Khan Academy
Khan Academy: Linear Algebra: Surjective(onto), Injective(one to One) Functions
Video explains what a surjective or onto function is and also what an injective or one-to-one function is. Gives examples and non-examples of surjective and injective functions. [9:31]
Khan Academy
Khan Academy: Linear Algebra: A More Formal Understanding of Functions
A more formal understanding of functions. This video introduces the term codomain and contrasts it with the term range. It also introduces the terminology scalar-valued function, real-valued function, and vector-valued function. [16:01]