Precalculus Help, PLEASE HELP ME!!! 

Precalculus Help, PLEASE HELP ME!!! 




Oct 21 2007, 07:31 PM 
Firstly I'd suggest that you look at your functions as graphs. Get yourself a graph package that you can enter functions into.
I will try to describe, (but it really doesn't work for me) F(x) = x^n, n=2,3, will both look like the letter U, with x^3 having a steeper curve. x^1/2 will look like half of x^2 laying on it's side (this is actually a reflection already, of x^2, in the line y=1x.) F(x)=x will look like a V. The line will be straight all the way into x=0, then it will turn sharply at 90 degrees. F(x)=[x] is (1/x). Difficult to describe (there is a picture on this page http://www.mathsrevision.net/alevel/pages.php?page=13 ) You also need to know what transformations are. There is a brillant video for this here : https://www.youtube.com/watch?v=JX3VmDgiFnY Although it deals with mobius transformations, the movemenets at the start (verticalhorizontal translations, reflections, dialations) are the ones you need (although the inversion you aren't asked to deal with). How long do you have for the project? /T 






Oct 22 2007, 03:45 AM


thanks for the help and the links guys. Ill check them out
I think [x] means Step Function...  Playing Guitar Since: December 2006 

