00:01
One of the most powerful ways that we can apply math is through mathematical models.
00:04
So we have this relationship between sound files on a hard drive.
00:09
We also have relationships between free space on a hard drive, the size of a soccer field, cabbage patches, vegetable patches, orchard gardens, piano manufacturing.
00:23
So we see that the variety of ways in which these models can be applied.
00:28
And we're going to go through a couple examples to see how we can model functions.
00:32
So if we know that we have 200 sound files on a hard drive, and this is increasing by 10 sound files each day, then we know that the number of sound files as a function of time is equal to the 200 original ones plus 10 additional files each day, where t is the number of days.
00:50
Then skipping down, we could look at a rectangular soccer field that's twice the length, has a length twice equal to its width, we want to find the area.
01:01
Well, we know that area in terms of x is equal to two times the width plus two times the length.
01:10
But we know that, or sorry, the area is equal to the length times the width.
01:16
But we already know that the length is equal to twice its width...