Precalculus Review Calculus Preview - Cool math . com

$Cool math fractal$

Your browser does not support the IFRAME tag.

$cool math anxiety survival and success guide$ $cool geometry art - fractals, polyhedra, more$ $other math stuff$
$cool math lessons$ $cool math games and practice problems$ $cool math games$ $free online math dictionary$
$Cool Math 4 Kids$

Coolmath Precalculus Review Calculus Preview
Lesson 19 - Graphing - Rational Functions: The Whole Thing
(page 1 of 10)
---- This Precalculus review (Calculus preview) lesson explains how to put all the pieces (intercepts and asymptotes) together to graph rational functions.

Your browser does not support the IFRAME tag.

	Your browser does not support the IFRAME tag.


Graphing Calculator	Scientific Calculator	<< a new window will open for these

OK... what were the 2 things?

	intercepts
	asymptotes

What were the 2 sentences?

	These guys are functions.
	Graphs hug asymptotes.

Let's do some graphing, baby!

Graph

2 things
and
2 sentences!

The y-intercept: Find f(0)

f( 0 ) = ( 2( 0 )^2 + 5 ) / ( ( 0 )^2 - 25 ) = -1 / 5

( 0 , -1 / 5 ) ... nowhere else!

The x-intercept: Set numerator = 0 and solve

2x^2 + 5 = 0
Since we only deal with real numbers when graphing, this has no solution!

* Do you see why?

It will never cross the x-axis
This is going to be very useful info!

Continued on the next page

The printing and distribution and/or downloading of these lessons is strictly prohibited.


Graphing Calculator	Scientific Calculator	<< a new window will open for these

||||| copyrights and fair use of these lessons |||||

.....::::::::::::::: HELP SUPPORT COOLMATH :::::::::::::::.....
::::::: link to us ::::::: advertise with us ::::::: why we have ads ::::::: cool math games store :::::::

|| about us || about our Cool Math Games || safe surfing || privacy policy || terms of use || copyrights & fair use ||

|| cool math pre-algebra || cool math algebra || cool math precalculus / calculus || cool math anxiety survival || geometry / art / fractals / polyhedra ||
|| free online brain bender and jigsaw puzzles || cool math books || other math stuff ||

|| cool math lessons: how to... || cool math games & practice problems || cool math 4 kids lessons and games || cool math games for arithmetic ||
|| free online math dictionary || geometry / trigonometry reference || cool math for teachers || cool math for parents || cool math games ||

|| Coolified Games || Cool Math 4 kids || Spike's Game Zone || Finance Freak || Totally Stressed Out || Science Monster lessons ||