Precalculus Help, PLEASE HELP ME!!! |
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Precalculus Help, PLEASE HELP ME!!! |
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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 (vertical-horizontal 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 |
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Oct 22 2007, 03:45 AM
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thanks for the help and the links guys. Ill check them out
I think [x] means Step Function... -------------------- Playing Guitar Since: December 2006 |
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