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First, let's take a new view of our
coordinate system:

We'll need to be thinking about these
a lot to get through this!
Now, let me introduce you to
Sideways Parabola Guy:
He's the same shape as
Standard Parabola Guy.
He opens
towards positives -- just like Standard Parabola
Guy:
Now, we are going to need to be able
to move this new guy around. Let's look at what's happening a
little at a time:
Continued on the
next
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