Cool math fractal

math image

math image

pre-algebra help lessonsalgebra help lessonsprecalculus / calculus help lessonsmath anxiety survival guidegeometry math artmath and jigsaw puzzlesCoolmath booksother math stuff
math help lessonsmath practice problemsmath gamesmath dictionarygeometry trigonometry reference area
teacher's areaparent's areaCoolmath 4 kidsSpike's Game ZoneFinance FREAKTotally Stressed OutScience Monster

Coolmath Algebra
Graphing Polynomials Lesson 10 - Relative Maximums and Minimums (Extrema)  (page 1 of 2)
---- This algebra lesson explains how to find the relative maximums and minimums (extrema) of a polynomial.

math image

Now available:  Coolmath Algebra books!  Part 1, Part 2 and Part 3 covering the Algebra you need from Algebra 1 through Precalculus Algebra (Beginning Algebra through College Algebra)

other Coolmath Books:  Coolmath Precalculus Review (the math you really need to survive Calculus 1) and Math Survival Guide (How to conquer math and deal with math anxiety)

line
Graphing Calculator Scientific Calculator << a new window will open for these
line
Check out this graph:

a graph of a polynomial with relative extrema at points ( -3 , 2 ) , ( -1 , -3 ) , ( 2 , 1 ) and ( 4 , -1 )

The tops of the mountains are relative maximums because they are the highest points in their little neighborhoods (relative to the points right around them):

the relative maximums are the highest points on the "mountains" of the graph

Suppose you're in a roomful of people (like your classroom).  Find the tallest person there.  (It's usually a guy.)  He is the relative max of that room.  Specifically, he's the tallest relative to the people around him.   But, what if you took that guy to an NBA convention?  There'd be lots of guys who beat him.

Look back at the graph...

the relative maximums of the graph are 2 at x = -3 and 1 at x = 2 ... the guys in the interval ( 4 , infinity ) keep going and beat out our relative maximums, but we don't care!

(Relative extrema (maxes and mins) are sometimes called local extrema.)

Other than just pointing these things out on the graph, we have a very specific way to write them out.

Officially, for this graph, we'd say:

f has a relative max of 2 at x = -3.

f has a relative max of 1 at x = 2.

The max is, actually, the height...  the x guy is where the max occurs.

So, saying that the max is (-3, 2) would be unclear and not really correct.

Continued on the next page

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

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

.....:::::::::::::::  HELP SUPPORT COOLMATH  :::::::::::::::.....
:::::::  link to us   :::::::   advertise with us  :::::::  why we have ads  :::::::

Thanks for visiting Coolmath.com
© 1997-2010 Coolmath.com, Inc.