swissgirl
  • swissgirl
Expanding using wolfram
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
swissgirl
  • swissgirl
@apoorvk
swissgirl
  • swissgirl
wait i messed up the function
swissgirl
  • swissgirl
idk how i am suppoosed to deal with this. Like i have mathematica but not either sure how to use it

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swissgirl
  • swissgirl
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)
anonymous
  • anonymous
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
anonymous
  • anonymous
That's what comes out when I pastein Wolfram...
anonymous
  • anonymous
What are you supposed to be doing, solve for x?
swissgirl
  • swissgirl
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
swissgirl
  • swissgirl
@ParthKohli @Hero Can you check this out?
Hero
  • Hero
What are you trying to expand that for?
swissgirl
  • swissgirl
Its expand and find like terms to get a single polynomial
ParthKohli
  • ParthKohli
Expand[expression]
ParthKohli
  • ParthKohli
Oh, then "expansion" is not the word.
ParthKohli
  • ParthKohli
Together[expression]
Hero
  • Hero
@swissgirl, you should probably get maple, quick
swissgirl
  • swissgirl
ohhhhhhhhh where wld i do that on wolfram or mathematica?
swissgirl
  • swissgirl
I have mathematica but i have no clue how to use it
ParthKohli
  • ParthKohli
Mathematica, of course!
swissgirl
  • swissgirl
Parth can u guide me step by step cuz i am stupiddddd
ParthKohli
  • ParthKohli
Just go to any notebook and type in "Together[your expression]".
ParthKohli
  • ParthKohli
And then, shift+enter for output.
swissgirl
  • swissgirl
ohhhh ok let me try that give me a sec? Hero do u have a program on maple for interpolating lagrange polynomials?
anonymous
  • anonymous
Maple is OK, got to type in a lot of *'s.....
swissgirl
  • swissgirl
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
ParthKohli
  • ParthKohli
@swissgirl In Mathematica, click on Palettes on the menu bar. You should see a Basic Math Assistant.
swissgirl
  • swissgirl
okkkkkk
ParthKohli
  • ParthKohli
There, you get a list of symbols and commands. :)
anonymous
  • anonymous
I suppose that mess is the n+1 points, is that it?
swissgirl
  • swissgirl
yup lol
swissgirl
  • swissgirl
its the \(f(x_n)*L_n(x)\) polynomials
swissgirl
  • swissgirl
I got the wrong answer though. hmmm I wonder y
swissgirl
  • swissgirl
What does together mean?
swissgirl
  • swissgirl
@ParthKohli
Hero
  • Hero
Wow, @swissgirl, I'm sorry you're experiencing such difficulty
swissgirl
  • swissgirl
idk I plugged term by term into the calculator and got the correct answer but mathematica for some reason gave me the wrong answer
anonymous
  • anonymous
http://mathworld.wolfram.com/LagrangeInterpolatingPolynomial.html Says Mathematica implents as InterpolatingPolynomial[data,var]
ParthKohli
  • ParthKohli
I don't know much about Math :P
anonymous
  • anonymous
http://reference.wolfram.com/mathematica/ref/InterpolatingPolynomial.html
swissgirl
  • swissgirl
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
swissgirl
  • swissgirl
THHANNNKKKKSSSS ESTUDIERRRRRRRRRRRR
swissgirl
  • swissgirl
omg i have been sitting hours here.
anonymous
  • anonymous
I hope you can figure it out, I haven't Mathematica....
swissgirl
  • swissgirl
@estudier I GOT THE CORRECT ANSWEERRRRRRRRRRR lol OMG Finallllyyy
swissgirl
  • swissgirl
@experimentX like y didnt mathematica process all my polynomials. It was giving me an incorrect answer
experimentX
  • experimentX
huh? really?
swissgirl
  • swissgirl
yaaaaa its weird
swissgirl
  • swissgirl
I may have inputed it incorrectly
experimentX
  • experimentX
what is this? 8.9824391 E - 7
swissgirl
  • swissgirl
8.9824391*10^-7
swissgirl
  • swissgirl
ohh mayge i gotta bracket the -7
swissgirl
  • swissgirl
let me try that
swissgirl
  • swissgirl
But which brackets would u suggest I use?
experimentX
  • experimentX
probably due to that ... try to input piecewise.
experimentX
  • experimentX
( ) small brackets
swissgirl
  • swissgirl
THANKS :)
swissgirl
  • swissgirl
nah it became wierder
swissgirl
  • swissgirl
let me try 10^-n instead of E
experimentX
  • experimentX
8.9824391*10^(-7)
experimentX
  • experimentX
Or click (from menu) Palette > Basic math assistant
swissgirl
  • swissgirl
much closer like just a bit off like instead of 6.67 i have 3.47
swissgirl
  • swissgirl
idk whatever too bad
swissgirl
  • swissgirl
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)]
swissgirl
  • swissgirl
oh whoops in mathematica the exponent was where it needed to be
experimentX
  • experimentX
hmm ... try doing this in pieces ... check every polynomial
swissgirl
  • swissgirl
ohhh should do that let me try that
swissgirl
  • swissgirl
okkkk i think its because i rounded off a number. I think its my problem. Thankksss for helping me outtt :)))))))
experimentX
  • experimentX
no probs!! have fun swissgirl
swissgirl
  • swissgirl
:)

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