Question

FANNING for good HELP!!!!
Anyone that knows how to do this briefly, not in a mood for super-long, retarded formulas.

Answer 1

I asked this a number of times, I know, but \[f(x)=x^3-x+7\]

Answer 2

Or perhaps there is no brief way, other than a huge retarded theorem with many square roots that are inside square roots, and etc.. (forgot what it's called)

Answer 3

Yes, I found the easier way! It's called “logging out”

Answer 4

All you did was write down a function. You have not actually asked a question.

What do you want done with that function?

Answer 5

Find all it's zeros.
(Once the zeros are found, I'll be probably able to graph it on my own)

Answer 6

The single formula to solve something like that is "super-long-retarded".

Answer 7

yep

Answer 8

thank the italians and be glad there is not a ^4

Answer 9

if you can "guess a solution" there is a much easier way

Answer 10

f(x) = x^3 + 0x^2 - x + 7
use synthetic division and input numbers too see the zeroes..
use descarte's rule of signs to figure out how many roots there are

Answer 11

you need a solution first @shamil98

Answer 12

google
Tartaglia and follow his algorythm

Answer 13

its very easy

Answer 14

gets a little lame with x^4.....

Answer 15

lol

Answer 16

super-long-root :D

Answer 17

http://web.mit.edu/10.213/www/extra/solvecubic.pdf

Answer 18

OK, sorry I got disconnected, due to OS and additionally the temperature where the router was kept, so I had to fix all that.
I really don't need the answer as much as the ability to do it on my own.

Answer 19

Loser66, how can you explain ?

Answer 20

oh, I see

Answer 21

Has to cross the axis somewhere.

Answer 22

GO on,

Answer 23

intermediate value theorem is applied because the function is continuous

Answer 24

I can use approximation, right?
But I am never going to get an exact answer without the world most retarded formula.

Answer 25

I dont think you are going to guess this root, I think the point is to use the Italians method

Answer 26

dudes its uber easy

Answer 27

you would have been done 5 times over by now if you would jsut do it

Answer 28

Italian method? How

Answer 29

i posted you the link

Answer 30

http://web.mit.edu/10.213/www/extra/solvecubic.pdf

Answer 31

Ok, can I try to do it now?

Answer 32

you are asking for an easy way to do something that some of the greatest minds in the world have been working on for thousands of years....

Answer 33

100 of years? I doubt that!!!!!!!!!!!!!!!!!!!!!

Answer 34

!000 (typo)

Answer 35

if anyone is bored you should read the history behind the italians method.

Answer 36

um for sure 1000s of years

Answer 37

google:)

Answer 38

Google will tell you yes and will tell you no.

Answer 39

there are solutions to cubics on tablets from china that are thousands of years old

Answer 40

ok read a book then

Answer 41

the italians figured out the algorithm in the 1600s I think, and there was a big feud and lies and back stabbing and .... its a crazy story

Answer 42

you can do two things
1) guess a root and then use division to find the other
2) use the algorithm

Answer 43

Why are suddenly talking about how long ago were the cubic functions, that just is irrelevent here (sorry for points that out).

Also using Iteration, it's V=0, b/c C=0

Answer 44

we are talking about it because I told you that you are trying to find a way to do something that people have been working on for 1000s of years, you then said that is not true. I told you that you are wrong.....its all right there man^^^^

Answer 45

again, you would have been done a long long long time ago

Answer 46

I will re-post this again, CLOSED!!!!!!!!!!!!!!!!!!!! got NO HELP what so ever!!!

Answer 47

omg dude? we have told you many times how to do it, keep reposting you will keep getting the same answer...... you want magic. do the work man.
how did you get that 99 lol

Answer 48

if there was an easy way, why would the algorithm even exist.

Answer 49

you won't get far with such attitude. don't expect easy answers for every problem!

Answer 50

use Vieta's substitution

Answer 51

zzr0ck3r, trying to sound smart ? bad attempt!
You weren't helping, you were uselessly debating how long ago was this math...
How I got the 99? I guess by helping and being nice to people that need help just the way I do.

ocelot, I was verifying if there is an easy way, and it is not that I wouldn't do it the hard way, except the easier way would be better. Also, most of the problems can be solved in a relevantly easy way.

Zarkon, Primeralph and shamil98, sorry for this notification.