What is an Integral and what is it used for?
|dw:1380759409587:dw|If I asked you to find the area of this shape, what would you do? Multiply length times width right?
|dw:1380759482600:dw|If you need to find the area of a weirdly-shaped region like this, what can we do? We don't have a nice area formula for it like we do with a rectangle! :(
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