1 2 12
1 10 13

:

  1. #1

    Mar 2012
    Athens, , Greece.
    :
    99



    , y=f(x)= ax3 + bx2 + cx + d.

    excel function LINEST trend line chart .

    http://www.tushar-mehta.com/publish_...nalysis/16.htm
    2



    f1(x) .
    f1() y.

    f2(x) 2:6.
    H y f2(x) .

    , try and error, N .

    .

    To xls http://www.filefactory.com/file/2q7j...regression_xls

  2. #2

    Oct 2005
    Nikea, , Greece.
    :
    2,979
    f(x), f(x), . cubics splines . , trial and error.
    Bezier ' B-Splines. , control points , , ( ).
    , ;



    bezier, , control points.

    , open source , wolfram alpha. excel LINEST;.


    I believe we should all pay our tax with a smile. I tried - but they wanted cash...

  3. #3

    Oct 2005
    Nikea, , Greece.
    :
    2,979
    ...


    I believe we should all pay our tax with a smile. I tried - but they wanted cash...

  4. #4

    Mar 2012
    Athens, , Greece.
    :
    99
    Dipoli, EIM (http://www.eim.gr/). Bezier .


    .
    .
    , , 100lt .

    .

    http://lnx.startitaliana.com/view2.php?id=1
    http://www.autotank.com/product_15.aspx
    http://www.fafnir.com/Petrol-Station...el-Sensors.php

    .

    (R2 ~ 1 & e)

    - 150oC 5 . ( 2%). . ( & ).

    .

    try and error .

    quote:
    excel LINEST;.
    excel calculator Linest .
    A .

    To Excel Visicalc

  5. #5

    Jun 2008
    Glyfada, , Greece.
    :
    3,101
    . 0,5% . .

    y=a+bx+cx^2+dx^3+ex^4+fx^5
    a 411.9463946
    b 7.571172924
    c 0.011276486
    d -5.5632e-06
    e 1.47275e-09
    f -2.4718e-13

    ..
    quote:To Excel Visicalc
    ! Linux Mac
    .
    VisiCalc;



  6. #6

    Mar 2012
    Athens, , Greece.
    :
    99

    , .

    3 .

    quote: VisiCalc;
    Visicalc spreadsheet excel Apple II & Apple III.



    http://dssresources.com/history/sshistory.html

  7. #7

    Oct 2005
    Nikea, , Greece.
    :
    2,979
    wolfram alpha mathematica , .

    10.
    .
    , , . , .


    I believe we should all pay our tax with a smile. I tried - but they wanted cash...

  8. #8

    Oct 2005
    Nikea, , Greece.
    :
    2,979
    ,


    I believe we should all pay our tax with a smile. I tried - but they wanted cash...

  9. #9

    Mar 2012
    Athens, , Greece.
    :
    99
    quote:

  10. #10

    Oct 2005
    Nikea, , Greece.
    :
    2,979







    I believe we should all pay our tax with a smile. I tried - but they wanted cash...

  • You may not post new threads
  • You may not post attachments
  •