MAT135H1 Lecture Notes - Lecture 1: Constant Function

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MAT135H1 Full Course Notes
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Function a mapping that takes one input to one output. Ex. 1 $: money in your bank account months of rent you have. Though for each of the above inputs there is the same output, this still satisfies the criteria for a function. Ex. 2 are the following functions: a rectangle of a given area. If area is the input, then there is one input. However, many rectangles with different dimensions can have the same area if rectangles are the output, then there are many outputs for one input! Thus, this is not a function: 4. There is a constant function 4 (a function that takes any number as an input and outputs. However, it is the notation that makes this function a function.

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