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swissgirl

  • 3 years ago

Expanding using wolfram

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  1. swissgirl
    • 3 years ago
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    @apoorvk

  2. swissgirl
    • 3 years ago
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    wait i messed up the function

  3. swissgirl
    • 3 years ago
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    idk how i am suppoosed to deal with this. Like i have mathematica but not either sure how to use it

  4. swissgirl
    • 3 years ago
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    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)

  5. estudier
    • 3 years ago
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    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

  6. estudier
    • 3 years ago
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    That's what comes out when I pastein Wolfram...

  7. estudier
    • 3 years ago
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    What are you supposed to be doing, solve for x?

  8. swissgirl
    • 3 years ago
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    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

  9. swissgirl
    • 3 years ago
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    @ParthKohli @Hero Can you check this out?

  10. Hero
    • 3 years ago
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    What are you trying to expand that for?

  11. swissgirl
    • 3 years ago
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    Its expand and find like terms to get a single polynomial

  12. ParthKohli
    • 3 years ago
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    Expand[expression]

  13. ParthKohli
    • 3 years ago
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    Oh, then "expansion" is not the word.

  14. ParthKohli
    • 3 years ago
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    Together[expression]

  15. Hero
    • 3 years ago
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    @swissgirl, you should probably get maple, quick

  16. swissgirl
    • 3 years ago
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    ohhhhhhhhh where wld i do that on wolfram or mathematica?

  17. swissgirl
    • 3 years ago
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    I have mathematica but i have no clue how to use it

  18. ParthKohli
    • 3 years ago
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    Mathematica, of course!

  19. swissgirl
    • 3 years ago
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    Parth can u guide me step by step cuz i am stupiddddd

  20. ParthKohli
    • 3 years ago
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    Just go to any notebook and type in "Together[your expression]".

  21. ParthKohli
    • 3 years ago
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    And then, shift+enter for output.

  22. swissgirl
    • 3 years ago
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    ohhhh ok let me try that give me a sec? Hero do u have a program on maple for interpolating lagrange polynomials?

  23. estudier
    • 3 years ago
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    Maple is OK, got to type in a lot of *'s.....

  24. swissgirl
    • 3 years ago
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    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

  25. ParthKohli
    • 3 years ago
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    @swissgirl In Mathematica, click on Palettes on the menu bar. You should see a Basic Math Assistant.

  26. swissgirl
    • 3 years ago
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    okkkkkk

  27. ParthKohli
    • 3 years ago
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    There, you get a list of symbols and commands. :)

  28. estudier
    • 3 years ago
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    I suppose that mess is the n+1 points, is that it?

  29. swissgirl
    • 3 years ago
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    yup lol

  30. swissgirl
    • 3 years ago
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    its the \(f(x_n)*L_n(x)\) polynomials

  31. swissgirl
    • 3 years ago
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    I got the wrong answer though. hmmm I wonder y

  32. swissgirl
    • 3 years ago
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    What does together mean?

  33. swissgirl
    • 3 years ago
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    @ParthKohli

  34. Hero
    • 3 years ago
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    Wow, @swissgirl, I'm sorry you're experiencing such difficulty

  35. swissgirl
    • 3 years ago
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    idk I plugged term by term into the calculator and got the correct answer but mathematica for some reason gave me the wrong answer

  36. estudier
    • 3 years ago
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    http://mathworld.wolfram.com/LagrangeInterpolatingPolynomial.html Says Mathematica implents as InterpolatingPolynomial[data,var]

  37. ParthKohli
    • 3 years ago
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    I don't know much about Math :P

  38. estudier
    • 3 years ago
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    http://reference.wolfram.com/mathematica/ref/InterpolatingPolynomial.html

  39. swissgirl
    • 3 years ago
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    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

  40. swissgirl
    • 3 years ago
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    THHANNNKKKKSSSS ESTUDIERRRRRRRRRRRR

  41. swissgirl
    • 3 years ago
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    omg i have been sitting hours here.

  42. estudier
    • 3 years ago
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    I hope you can figure it out, I haven't Mathematica....

  43. swissgirl
    • 3 years ago
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    @estudier I GOT THE CORRECT ANSWEERRRRRRRRRRR lol OMG Finallllyyy

  44. swissgirl
    • 3 years ago
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    @experimentX like y didnt mathematica process all my polynomials. It was giving me an incorrect answer

  45. experimentX
    • 3 years ago
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    huh? really?

  46. swissgirl
    • 3 years ago
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    yaaaaa its weird

  47. swissgirl
    • 3 years ago
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    I may have inputed it incorrectly

  48. experimentX
    • 3 years ago
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    what is this? 8.9824391 E - 7

  49. swissgirl
    • 3 years ago
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    8.9824391*10^-7

  50. swissgirl
    • 3 years ago
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    ohh mayge i gotta bracket the -7

  51. swissgirl
    • 3 years ago
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    let me try that

  52. swissgirl
    • 3 years ago
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    But which brackets would u suggest I use?

  53. experimentX
    • 3 years ago
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    probably due to that ... try to input piecewise.

  54. experimentX
    • 3 years ago
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    ( ) small brackets

  55. swissgirl
    • 3 years ago
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    THANKS :)

  56. swissgirl
    • 3 years ago
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    nah it became wierder

  57. swissgirl
    • 3 years ago
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    let me try 10^-n instead of E

  58. experimentX
    • 3 years ago
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    8.9824391*10^(-7)

  59. experimentX
    • 3 years ago
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    Or click (from menu) Palette > Basic math assistant

  60. swissgirl
    • 3 years ago
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    much closer like just a bit off like instead of 6.67 i have 3.47

  61. swissgirl
    • 3 years ago
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    idk whatever too bad

  62. swissgirl
    • 3 years ago
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    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)]

  63. swissgirl
    • 3 years ago
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    oh whoops in mathematica the exponent was where it needed to be

  64. experimentX
    • 3 years ago
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    hmm ... try doing this in pieces ... check every polynomial

  65. swissgirl
    • 3 years ago
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    ohhh should do that let me try that

  66. swissgirl
    • 3 years ago
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    okkkk i think its because i rounded off a number. I think its my problem. Thankksss for helping me outtt :)))))))

  67. experimentX
    • 3 years ago
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    no probs!! have fun swissgirl

  68. swissgirl
    • 3 years ago
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    :)

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