I know the exam is over, but I figured in order to get another blog in before the end of the semester, I’d post a few videos for each target for people to look over while you’re finishing up (or just starting) your semester portfolios. I don’t know about you guys, but watching the videos on the subjects I don’t understand really help.

Functions:

How to tell if a set of data is a function, http://www.youtube.com/watch?v=uWXmfnpAirA

(Vertical Line Test), http://www.youtube.com/watch?v=j6FENbsdswA&feature=channel

Domain and Range:

Graphically, http://www.youtube.com/watch?v=I0f9O7Y2xI4 (The dude is kind of obnoxious, but you get the point)

Algebraically, http://www.youtube.com/watch?v=w81y25anEOM

Transformations:

Basic Overview, http://www.youtube.com/watch?v=LAH8A4CaDYM

Composition:

General Review, http://www.youtube.com/watch?v=S4AEZElTPDo

Inverse:

How to tell if a function has one or doesnt, http://www.youtube.com/watch?v=Ec5YYVxyq44&feature=channel

How to solve for them, http://www.youtube.com/watch?v=cYH6ZB6o59I (disregard his weirdness, he has a valid point)

Trigometric Functions:

How to use them, http://www.youtube.com/watch?v=mt8xIcYmp9Q&feature=related

Examples, http://www.youtube.com/watch?v=pviWtesNnAY&feature=related

(FF to 0:35), http://www.youtube.com/watch?v=GFbYHRMraKE&feature=fvst

Hopefully these videos will help you when you’re validating your reasoning in the portfolios, as they helped me. Also, if these really aren’t specifically what you’re looking for, there are PLENTY of videos out there explaining alot of the things we’ve covered in class with maybe more detailed opinions on the topics you’re having trouble with. Be careful though, as there are alot of irrelevant videos out there labeled precalculus but are really a big waste of your time.

-Katy S.