Question

Expanding using wolfram

Answer 1

@apoorvk

Answer 2

wait i messed up the function

Answer 3

idk how i am suppoosed to deal with this. Like i have mathematica but not either sure how to use it

Answer 4

8.9824391E-7(x^6-94x^5+3529x^4-67624x^3+695548x^2-3624640+7425000)-3.04470962E-5(x^6-88x^5+3001x^4-49618x^3+397840x^2-1237600x)+2.822089947E-4(x^6-84x^5+2689x^4-40734x^3+288208x^2-742560x)- 3.25571254E-4(x^6-81x^5+2476x^4-35436x^3+234880x^2-571200x)+1.742019122E-4(x^6-77x^5+2220x^4-29884x^3+187520x^2-435800x)-6.2386735E-5(x^6-74x^5+2049x^4-26644x^3+162668x^2-371280x)+1.96362980E-6(x^6-66x^5+1681x^4-20556x^3+119980x^2-265200x)

Answer 5

8.98244x10^-7 (x^6-94 x^5 3529 x^4-67624 x^3 695548 x^2 3800360)-304471. (x^6-88 x^5 3001 x^4-49618 x^3 397840 x^2-1237600 x) 0.000282209 (x^6-84 x^5 2689 x^4-40734 x^3 288208 x^2-742560 x)-3.25571

Answer 6

That's what comes out when I pastein Wolfram...

Answer 7

What are you supposed to be doing, solve for x?

Answer 8

ummm well actually it didnt allow u to paste everything cuz the input was too large and therefore u got the incorrect answer but i need to expand the following

Answer 9

@ParthKohli @Hero Can you check this out?

Answer 10

What are you trying to expand that for?

Answer 11

Its expand and find like terms to get a single polynomial

Answer 12

Expand[expression]

Answer 13

Oh, then "expansion" is not the word.

Answer 14

Together[expression]

Answer 15

@swissgirl, you should probably get maple, quick

Answer 16

ohhhhhhhhh where wld i do that on wolfram or mathematica?

Answer 17

I have mathematica but i have no clue how to use it

Answer 18

Mathematica, of course!

Answer 19

Parth can u guide me step by step cuz i am stupiddddd

Answer 20

Just go to any notebook and type in "Together[your expression]".

Answer 21

And then, shift+enter for output.

Answer 22

ohhhh ok let me try that give me a sec?
Hero do u have a program on maple for interpolating lagrange polynomials?

Answer 23

Maple is OK, got to type in a lot of *'s.....

Answer 24

lol idk how to program at allllllll lol
So if the program isnt given to me then I wont know how to use it and for this specific section My textbook didnt provide coding so I am stuck

Answer 25

@swissgirl In Mathematica, click on Palettes on the menu bar. You should see a Basic Math Assistant.

Answer 26

okkkkkk

Answer 27

There, you get a list of symbols and commands. :)

Answer 28

I suppose that mess is the n+1 points, is that it?

Answer 29

yup lol

Answer 30

its the \(f(x_n)*L_n(x)\) polynomials

Answer 31

I got the wrong answer though. hmmm I wonder y

Answer 32

What does together mean?

Answer 33

@ParthKohli

Answer 34

Wow, @swissgirl, I'm sorry you're experiencing such difficulty

Answer 35

idk I plugged term by term into the calculator and got the correct answer but mathematica for some reason gave me the wrong answer

Answer 36

http://mathworld.wolfram.com/LagrangeInterpolatingPolynomial.html

Says Mathematica implents as InterpolatingPolynomial[data,var]

Answer 37

I don't know much about Math :P

Answer 38

http://reference.wolfram.com/mathematica/ref/InterpolatingPolynomial.html

Answer 39

like look only the first polynomial has like a term without an x
8.9824391E-7(x^6-94x^5+3529x^4-67624x^3+695548x^2-3624640+7425000)
so 8.9824391E-7*7425000=6.67 but mathematica gives me this number that is wayyy offff

Answer 40

THHANNNKKKKSSSS ESTUDIERRRRRRRRRRRR

Answer 41

omg i have been sitting hours here.

Answer 42

I hope you can figure it out, I haven't Mathematica....

Answer 43

@estudier I GOT THE CORRECT ANSWEERRRRRRRRRRR lol
OMG Finallllyyy

Answer 44

@experimentX like y didnt mathematica process all my polynomials. It was giving me an incorrect answer

Answer 45

huh? really?

Answer 46

yaaaaa its weird

Answer 47

I may have inputed it incorrectly

Answer 48

what is this?
8.9824391 E - 7

Answer 49

8.9824391*10^-7

Answer 50

ohh mayge i gotta bracket the -7

Answer 51

let me try that

Answer 52

But which brackets would u suggest I use?

Answer 53

probably due to that ... try to input piecewise.

Answer 54

( ) small brackets

Answer 55

THANKS :)

Answer 56

nah it became wierder

Answer 57

let me try 10^-n instead of E

Answer 58

8.9824391*10^(-7)

Answer 59

Or click (from menu) Palette > Basic math assistant

Answer 60

much closer like just a bit off like instead of 6.67 i have 3.47

Answer 61

idk whatever too bad

Answer 62

Together[(8.9824391*10^-7) (x^6 - 94 x^5 + 3529 x^4 - 67624 x^3 +
695548 x^2 - 3624640 + 7425000) - (3.04470962*10^-5) (x^6 -
88 x^5 + 3001 x^4 - 49618 x^3 + 397840 x^2 -
1237600 x) + (2.822089947*10^-4) (x^6 - 84 x^5 + 2689 x^4 -
40734 x^3 + 288208 x^2 - 742560 x) - (3.25571254*10^-4) (x^6 -
81 x^5 + 2476 x^4 - 35436 x^3 + 234880 x^2 -
571200 x) + (1.742019122*10^-4) (x^6 - 77 x^5 + 2220 x^4 -
29884 x^3 + 187520 x^2 - 435800 x) - (6.2386735*10^-5) (x^6 -
74 x^5 + 2049 x^4 - 26644 x^3 + 162668 x^2 -
371280 x) + (1.96362980*10^-6) (x^6 - 66 x^5 + 1681 x^4 -
20556 x^3 + 119980 x^2 - 265200 x)]

Answer 63

oh whoops in mathematica the exponent was where it needed to be

Answer 64

hmm ... try doing this in pieces ... check every polynomial

Answer 65

ohhh should do that let me try that

Answer 66

okkkk i think its because i rounded off a number. I think its my problem. Thankksss for helping me outtt :)))))))

Answer 67

no probs!! have fun swissgirl

Answer 68

:)