Question

help, graph of f(x)=x^3+2x^2-4x-8. HOw you can graph it by hand.

Answer 1

I think you had a similar question yesterday. What don't you understand?

Answer 2

ok you set f(x) as 0,

Answer 3

and do gropuping, but i forgot how to keep going, i just need like how to start graphing.

Answer 4

x^3 function is a familiar function, you should know it. That is a start

Answer 5

can you help me out,

Answer 6

i just don't want to make a mistake, and go take the test, with the mistake

Answer 7

Look, usually in front of book, for picture of familiar graphs, you would see one of x^3

Answer 8

Yesterday, I gave you end behavior of functions ax^n, What is end behavior when n is odd, a>0?

Answer 9

like do the first step, i need to learn how to graph it by hand.

Answer 10

like do the first step, i need to learn how to graph it by hand.

Answer 11

We talked about this yesterday here, you didn't say, great I got it, or no I still don't understand it http://openstudy.com/users/chaguanas#/users/chaguanas/updates/4dd93550d95c8b0b564164c4

Answer 12

it don't really help me much, i need to learn how to graph it

Answer 13

That is why I can't help you. I am telling you stuff to help you graph it and you are saying it doesn't help you.

Answer 14

ok, do it like if you were going to graph the fucntion

Answer 15

When you are graphing these things, it is not like high school where you get an x, get a y. It is intuitive. When they say end behavior that means one end is pointing one way, and so on. You find where it crosses x (x intercept) and where it crosses y (y intercept). It is a feeling a drawing, Not exact. So you have to have a basic idea of what an x^3 function looks like. I found one here http://www.google.com/imgres?imgurl=http://hotmath.com/hotmath_help/topics/cubic-functions/cubic-functions.gif&imgrefurl=http://hotmath.com/hotmath_help/topics/cubic-functions.html&h=300&w=300&sz=6&tbnid=YbJQkyHmHbgMfM:&tbnh=116&tbnw=116&prev=/search%3Fq%3Dx%2B3%2Bfunction%26tbm%3Disch%26tbo%3Du&zoom=1&q=x+3+function&hl=en&usg=__qWLwnpJWeQoFkqxZUFfy_7zXFTA=&sa=X&ei=ItrZTfv4BJCctwe7_ZnpDg&sqi=2&ved=0CEsQ9QEwBA

Answer 16

That one didn't come out http://hotmath.com/hotmath_help/topics/cubic-functions.html

Answer 17

what is the end behavoir?

Answer 18

The graph goes on to infinity, so basically you just draw a line in the direction and put an arrow at the end to denote it goes on to infinity, the graph is just a representation.

Answer 19

so infinity,inifyt

Answer 20

so infinity,inifyt

Answer 21

Just look at the link I sent you above, you would see the graph is cut off at both ends, but it is understood that it continues.

Answer 22

which one?

Answer 23

so en behavior, summaryes inifty,infity