Question

OMG CAN SOME1 HELP ME ALREADY iVE ASKED THIS ALL DAY

Answer 1

What is it? Ill take a crack at it...

Answer 2

-5x^7

Answer 3

okey lol
do u suggest any method ?

Answer 4

I feel you too I have a geometry question and no one has answered me since 11 in the morning

Answer 5

It's asking about the SEVENTH power. The swoops and swings are determined by the powers besides the seventh power(and the seventh power).
The only thing that is ONLY determined by the seventh power is the end directions. Since it's decreasing as X gets larger, it's a negative number.

There's not enough to let you solve anything besides knowing that the leading coefficient is negative, so i'm guessing that's what they want you to know
-ax^7

Since you can't figure out the real value of A, you guess... 5, 20, whatever. 80085 would be possible, but VERY unlikely given the look of the graph.

Answer 6

I don't know how to do this, but could someone help with my question. I'll give a medal to whoever helps me :)

Answer 7

how do you count the zeros in the function?

Answer 8

or graph

Answer 9

humm 7th power polynomial @darthspectrum
\(\large ax^7+bx^6+cx^5+dx^4+ex^3+fx^2+gx+hx+i\)
so guessing lol dnt goes well somtimes

Answer 10

ik lol
well one of the answers is like his answer

Answer 11

because you need to indicate in your expression the values of zeroes

Answer 12

ill give u an example
for second degree polynomial with zeros of 2,3
u right
(x-2)(x-3) right ?

Answer 13

that is a good question. have you tried similar problems involving 2 or 3 degrees?

Answer 14

because the same technique is involved with higher degrees

Answer 15

yep exactly
so put the zeros lol
then do the facored formulla like if its 2 or 3 degree can u try ?

Answer 16

I think you need to read about rational zero theorem and descartes rule of signs

Answer 17

7th degree means x^7
only 7 root gives u an answer using this method

Answer 18

here http://academics.utep.edu/Portals/1788/CALCULUS%20MATERIAL/2_5%20ZEROS%20OF%20POLY%20FN.pdf

Answer 19

it is on the first three pages of the document

Answer 20

like you were told earlier, the degree of a polynomial is indicated by the highest exponent of the expression

Answer 21

it depends on what application you are looking at
in geometry, the degrees can help you indicate what type of shape you are dealing with
first degree is for line
second degree is for area
third degree is for cube or volume
we don't particularly have any names for higher degrees, since they are an abstraction, buti instead they are represented in graphs and have many uses.

Answer 22

can someone help me out with my geometry problem?
http://openstudy.com/study#/updates/5356f6dee4b01d52d92a10f0

Answer 23

another application is in business. it can help determine how many times expenses and revenues rise and fall. right now, you are learning the abstract concept.

Answer 24

here's a document that will help you with your problem
http://finedrafts.com/files/CUNY/math/precal/Larson%20PreCal%208th/Larson%20Precal%20CH2.pdf

Answer 25

@KingGeorge

Answer 26

read the last document I shared

Answer 27

How much have you been taught about multiplicities of roots and how they effect the graph?

Answer 28

Those are the correct roots, but some of them will have powers. For example, it might be \[(x+5)(x+1)^3(x-4)^4(x-7)^2\]instead. To determine what those powers will be, you need to consider both the overall degree of the polynomial you need, and what the graph looks like.

Answer 29

First, what does the overall degree need to be?

Answer 30

Correct. Notice that the polynomial \[(x+5)(x+1)(x-4)(x-7)\]only has degree 4. So that means we need some extra powers (those powers are called the multiplicities). That's where the graph comes in. So here are some basic facts about how multiplicities effect graphs.

Answer 31

First, if the multiplicity of a zero is even, then the graph of the function around that particular point, will look likeFor example, look at the graph of \(x^2\). It's a simple parabola opening upward, that comes down, barely touches the x-axis, and starts going back up again.