Lucrare Practica - regresia patratica

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    f(t)*t^2

    Anii T f(t) t=T- 2001 t^2 t^3 t^4 f(t)*t

    2002 1923 1 1 1 1 1923

    2003 1428 2 4 8 16 2856

    2004 3403 3 9 27 81 10209

    2005 2965 4 16 64 256 11860

    2006 2746 5 25 125 625 13730

    12465 15 55 225 979 40578

    f(t) t t^2 n f(t)

    f(t)*t t^2 t^3 t f(t)*t

    f(t)*t^2 t^3 t^4 t^2 f(t)*t^2

    f(t) t t^2 n f(t)

    a= f()*t t^2 t^3 b= t f(t)*t

    n t t^2 n t

    t t^2 t^3 t t^2

    t^2 t^3 t^4 t^2 t^3

    n t t^2 n t

    t t^2 t^3 t t^2

    12465 15 55

    40578 55 225 671177925 466914800

    154352 225 979 502152750 631040625

    12465 15 55 520938000 595887930

    a= 40578 55 225 1694268675 1693843355

    5 15 55

    15 55 225 269225 166375

    55 225 979 185625 253125

    5 15 55 185625 220275

    15 55 225 640475 639775

    5 12465 55

    15 40578 225 198629310 12274845055 154352 979 127340400 173646000

    5 12465 55 154254375 183048525

    b= 15 40578 225 480224085 479442975

    5 15 55

    15 55 225 269225 166375

    55 225 979 185625 253125

    5 15 55 185625 220275

    15 55 225 640475 639775

    5 15 12465

    15 55 40578 42446800 37706625

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    55 225 154352 42069375 45650250

    5 15 12465 33476850 34729200

    c= 15 55 40578 117993025 118086075

    5 15 55

    15 55 225 269225 166375

    55 225 979 185625 253125

    5 15 55 185625 220275

    15 55 225 640475 639775

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    f(t)*t^2 F(t) a+bt+ct^2 607,6+1115,87*t-132

    1923 F(1) 1590.543

    5712 F(2) 2307.629

    30627 F(3) 2758.857

    47440 F(4) 2944.229

    68650 F(5) 2863.743

    154352 F(6) 2517.4 i!"#a$%

    t^2 n t f(t)

    t^3 t t^2 f(t)*t

    t^4 t^2 t^3 f(t)*t^2

    t^2 n t f(t)

    t^3 c= t t^2 f(t)*t

    t^2 n t t^2

    t^3 t t^2 t^3

    t^4 t^2 t^3 t^4

    t^2 n t t^2

    t^3 t t^2 t^3

    425320 607.6

    700

    781110 1115.871

    700

    &'%#( a#'$i

    a"tat%)

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    4000

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    -93050 -132.9286

    700

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    ,929*t^2

    3 4 5

    f(t)

    F(t)

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