Pre-Calculus Lesson 4.1 part2

I am setting the stage for introducing exponential and logarithmic functions by revisiting inverse functions. This is a sample of what we do at FMI. I am nervous being on camera and I am sure math teachers can pick up a few mis-spoken terms. Beyond that, I hope to help shed light on the troublesome section called, "logarithms".

Category:

Howto & Style

Tags:

• Pre-Calculus
• Algebra
• Lesson
• Inverse
• Function
• FMI
• themathmaster
• math
• mathematics
• part2

[j4clayto]

I have a question. You were showing the the horizontal line test method with 3 examples. The first example started with a vertical line test and since it failed you said it wasnt a function but just a relationship. On the second example it passed the vertical test but failed the horizontal. So why did you call that one a function? I couldnt hear what you said sound like something fell in the background for example 2 explanation.

[themathmaster]

Yes, the second example passed the vertical line test, therefore it is found to be a function. The horizontal line test checks to see if a function has an inverse function. In other words, the horizontal line test checks to see if the function is 1 to 1.

[mathproblems]

Not clear writing. Ues dark marker and focus the camera.

[themathmaster]

Thanx for the help. I am trying to figure out how to improve the video quality. I will keep working on it. If anyone has found methods that work, let me know.

[mightyflamelord]

Nickheyeskate

Lol same...its impossible that pre-calculus is as easy as it looks in this vid...

[hunterhalo2]

Your a mad good teacher. Please keep going with your videos! please!

[grubeci]

where was this when I was in h.s. You kids are going to be wicked smart. I just need this so that I can play tron.

[x0itwasalegend0x]

THANK YOU SO MUCH! YOU HELPED ME IN INSANE AMOUNTS!!!! the lightbulb went on for once :) thank you so so so so much!!

[eckosama]

i did too :)

[eckosama]

i can't tell ur nervous so don't worry bro

[NickHeyeskate]

Is a lot of this information from Algebra II? I'm taking Algebra II online, and I have already learned some of this...

[jinggoy01]

then what is f(x)=x^2

[darkrunner6]

look again please ^_^

[Stefon17]

I think you kind of messed up in the video because you gotta have one input for every output in order for it to be a function.