2.txt

用有理多项式做Chebyshev逼近的一种直接方法的matlab程序

f=1/(1+log(x))  x:[1,2]
g=1



run =

    90


lb =

   -3.251070638847519e-010


lb =

   -3.265836832013979e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.32658364901295  -0.32658364901295   0.32658364901295  -0.32658364901295   0.32658364901295

  Column 6 

  -0.32658376003525


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

    91


lb =

   -3.280570187421147e-010


lb =

   -3.295270776811077e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.32952696127353  -0.32952707229583   0.32952707229583  -0.32952707229583   0.32952707229583

  Column 6 

  -0.32952707229583


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

    92


lb =

   -3.309938674531796e-010


lb =

   -3.324573951733913e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.33245739494703  -0.33245739494703   0.33245739494703  -0.33245739494703   0.33245739494703

  Column 6 

  -0.33245728392473


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

    93


lb =

   -3.339176683028166e-010


lb =

   -3.353746940538955e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.33537461696653  -0.33537472798884   0.33537472798884  -0.33537472798884   0.33537472798884

  Column 6 

  -0.33537472798884


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

    94


lb =

   -3.368284795240707e-010


lb =

   -3.382790321257024e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.33827907142125  -0.33827907142125   0.33827907142125  -0.33827907142125   0.33827907142125

  Column 6 

  -0.33827907142125


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

    95


lb =

   -3.397263588323339e-010


lb =

   -3.411704670561880e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.34117053626659  -0.34117042524429   0.34117042524429  -0.34117042524429   0.34117042524429

  Column 6 

  -0.34117053626659


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

    96


lb =

   -3.426113639470943e-010


lb =

   -3.440490564432887e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.34404901150253  -0.34404901150253   0.34404901150253  -0.34404901150253   0.34404901150253

  Column 6 

  -0.34404901150253


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

    97


lb =

   -3.454835518725023e-010


lb =

   -3.469148572708572e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.34691483019600  -0.34691483019600   0.34691483019600  -0.34691483019600   0.34691483019600

  Column 6 

  -0.34691483019600


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

    98


lb =

   -3.483429796872526e-010


lb =

   -3.497679261650207e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.34976788132468  -0.34976788132468   0.34976788132468  -0.34976788132468   0.34976777030238

  Column 6 

  -0.34976788132468


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

    99


lb =

   -3.511897040550970e-010


lb =

   -3.526083200107507e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.35260827591088  -0.35260827591088   0.35260827591088  -0.35260816488858   0.35260816488858

  Column 6 

  -0.35260827591088


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

   100


lb =

   -3.540237815012507e-010


lb =

   -3.554360952218162e-010


delta =

  1.0e-009 *

  Columns 1 through 5 

   0.35543612497690  -0.35543612497690   0.35543612497690  -0.35543612497690   0.35543612497690

  Column 6 

  -0.35543623599921


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000


run =

   100


lb =

   -3.554360952218162e-010


E =

  1.0e+002 *

  Columns 1 through 5 

   0.00999999999645  -0.00931034586103   0.00724774104317   0.32103309267646   0.00094370498350

  Columns 6 through 7 

   1.21871958746794   0.00040757186485


x =

  Columns 1 through 5 

   1.00000000000000   1.04951556604879   1.18825509907063   1.38873953302184   1.61126046697816

  Columns 6 through 8 

   1.81174490092937   1.95048443395121   2.00000000000000