00:01
This problem is looking at the definition of a function, and often in functions, we're comparing the inputs of a set of data to the outputs of a set of data.
00:12
And usually you're used to seeing these as x values of a table and y values of a table.
00:20
Thinking about inputs and outputs of a function, we usually say with functions that there's a relationship or a correspondence between those two sets of data.
00:28
So for example, if the inputs were 1, 2, and 3, and the outputs were 1, 4, and 9, there is a correspondence between the input of 1 and the output of 1 between 2 and 4 and between 3 and 9.
00:43
In other words, the pattern we noticed is that the inputs are squared.
00:47
They're multiplied by themselves to get to the outputs...