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Tag Archives: precalculus
Minimizing Surface Area
I pulled together a video on how to minimize surface area using the graphing calculator. The same method can be generalized for any shape or for maximizing / minimizing any geometric quantity. This idea of optimization is very important in … Continue reading
Arithmetic and Geometric Series
Since it looks like you guys need some reminders on how to evaluate arithmetic and geometric series (from Ch. 1), here are two videos that I made that go over just that: Evaluating an arithmetic series (5 minutes and 47 … Continue reading
Completing the Square for Vertex Equation
Since completing the square has a lot of steps and it’s easy to forget some of them after a while, I went back and made a video for this topic. See http://blip.tv/file/4866146 (5 minutes and 7 seconds) It shows how … Continue reading
Function Transformations
Here’s a video for an earlier topic: function transformations. (I am going to go backwards and make the videos for the trickier old topics.) I apologize in advance for the choppiness of my explanation. You can still follow it, and … Continue reading
Composition Functions – How to Find Their Domains
Here is a video that goes over how to find the domains of composition functions. I showed in the previous video how to get these composition formulas, so this video only discusses the domains of those results. http://www.blip.tv/file/4857894/ (7 minutes and … Continue reading
Composition Functions – How to Write Their Equations
Here is a video about how to write the function equations for composition functions (f o g)(x), (g o f)(x), and (g o g)(x). http://www.blip.tv/file/4856488 (6 minutes and 50 seconds long) Note: This will be followed by another video (soon!) that shows you how … Continue reading
Domains of Combination Functions
I made a twopart video showing you how to find/predict the domains of combination functions f+g, fg, fg, f/g, and g/f. The Part 1 video goes over how to analyze just the domains of f and g. The Part 2 … Continue reading