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 [b,a]=cheby1(8,0.5,0.1)

b =

  1.0e-006 *

  Columns 1 through 4 

   0.00703924326028   0.05631394608227   0.19709881128793   0.39419762257586

  Columns 5 through 8 

   0.49274702821983   0.39419762257586   0.19709881128793   0.05631394608227

  Column 9 

   0.00703924326028


a =

  Columns 1 through 4 

   1.00000000000000  -7.44912258934158  24.46749067762108 -46.27560200466141

  Columns 5 through 8 

  55.11160187999928 -42.31640010161038  20.45543300484147  -5.69110270561444

  Column 9 

   0.69770374759022

 [b,a]=cheby1(8,0.5,0.2)

b =

  1.0e-003 *

  Columns 1 through 4 

   0.00158235533091   0.01265884264730   0.04430594926555   0.08861189853109

  Columns 5 through 8 

   0.11076487316387   0.08861189853109   0.04430594926555   0.01265884264730

  Column 9 

   0.00158235533091


a =

  Columns 1 through 4 

   1.00000000000000  -6.54522688134438  19.41294521474746 -33.98729349381804

  Columns 5 through 8 

  38.34929605644247 -28.52528050508299  13.65107068678909  -3.84213174594256

  Column 9 

   0.48704975384833

 [b,a]=cheby1(8,0.5,0.25)

b =

  1.0e-003 *

  Columns 1 through 4 

   0.00895261138923   0.07162089111382   0.25067311889837   0.50134623779673

  Columns 5 through 8 

   0.62668279724591   0.50134623779673   0.25067311889837   0.07162089111382

  Column 9 

   0.00895261138923


a =

  Columns 1 through 4 

   1.00000000000000  -5.97529229188545  16.58122329202101 -27.71423273542923

  Columns 5 through 8 

  30.39509758355313 -22.34729670426879  10.74509800434910  -3.08924633697497

  Column 9 

   0.40707685889802

 [b,a]=cheby1(8,0.5,0.3)

b =

  Columns 1 through 4 

   0.00003686396921   0.00029491175365   0.00103219113779   0.00206438227558

  Columns 5 through 8 

   0.00258047784447   0.00206438227558   0.00103219113779   0.00029491175365

  Column 9 

   0.00003686396921


a =

  Columns 1 through 4 

   1.00000000000000  -5.33470549343985  13.70037389057494 -21.75588696484276

  Columns 5 through 8 

  23.18202327509462 -16.90329659040841   8.22392477247094  -2.44277411352903

  Column 9 

   0.34033758803654

 [b,a]=cheby1(8,0.5,0.35)

b =

  Columns 1 through 4 

   0.00012226861410   0.00097814891279   0.00342352119476   0.00684704238953

  Columns 5 through 8 

   0.00855880298691   0.00684704238953   0.00342352119476   0.00097814891279

  Column 9 

   0.00012226861410


a =

  Columns 1 through 4 

   1.00000000000000  -4.62948850306899  10.88832119508066 -16.35566416678880

  Columns 5 through 8 

  16.93428334604548 -12.29189805603519   6.09722159245368  -1.89425679224944

  Column 9 

   0.28463683671142

 [b,a]=cheby1(8,0.5,0.4)

b =

  Columns 1 through 4 

   0.00034708996409   0.00277671971273   0.00971851899455   0.01943703798909

  Columns 5 through 8 

   0.02429629748636   0.01943703798909   0.00971851899455   0.00277671971273

  Column 9 

   0.00034708996409


a =

  Columns 1 through 4 

   1.00000000000000  -3.86557532033009   8.26246590570273 -11.69390652917087

  Columns 5 through 8 

  11.77561171603404  -8.54420813616590   4.35590129644984  -1.43430940799601

  Column 9 

   0.23814049785960

 [b,a]=cheby1(8,0.5,0.45)

b =

  Columns 1 through 4 

   0.00087708597199   0.00701668777593   0.02455840721574   0.04911681443148

  Columns 5 through 8 

   0.06139601803935   0.04911681443148   0.02455840721574   0.00701668777593

  Column 9 

   0.00087708597199


a =

  Columns 1 through 4 

   1.00000000000000  -3.04874737807241   5.93804117069426  -7.87510122375662

  Columns 5 through 8 

   7.73374686608910  -5.63298400137307   2.97678957873403  -1.05322441914798

  Column 9 

   0.19931789211446

 [b,a]=cheby1(8,0.5,0.5)

b =

  Columns 1 through 4 

   0.00202687366870   0.01621498934962   0.05675246272368   0.11350492544736

  Columns 5 through 8 

   0.14188115680920   0.11350492544736   0.05675246272368   0.01621498934962

  Column 9 

   0.00202687366870


a =

  Columns 1 through 4 

   1.00000000000000  -2.18458624588315   4.02681227326558  -4.91608641322758

  Columns 5 through 8 

   4.75414262152932  -3.48316789783825   1.92700066698603  -0.74138397504655

  Column 9 

   0.16689418212816

 [b,a]=cheby1(8,0.5,0.15)

b =

  1.0e-004 *

  Columns 1 through 4 

   0.00168337981086   0.01346703848690   0.04713463470415   0.09426926940831

  Columns 5 through 8 

   0.11783658676038   0.09426926940831   0.04713463470415   0.01346703848690

  Column 9 

   0.00168337981086


a =

  Columns 1 through 4 

   1.00000000000000  -7.03848157462604  22.07914782462711 -40.28279089382605

  Columns 5 through 8 

  46.72359700253385 -35.26467440752428  16.90850144425789  -4.70813439075344

  Column 9 

   0.58288064334514

 