How many terms in Chebyshev evaluation?
 Enter n between 6 and 40. Enter n=0 to END.
         X        Actual   Cheby. Deriv.
    -0.785398    3.498888    3.498823
    -0.628319    1.283716    1.283715
    -0.471239    0.169560    0.169560
    -0.314159   -0.165508   -0.165506
    -0.157080   -0.097782   -0.097784
     0.000000    0.000000    0.000003
     0.157080   -0.190228   -0.190229
     0.314159   -0.891418   -0.891416
     0.471239   -2.204569   -2.204570
     0.628319   -4.097215   -4.097213
     0.785398   -6.407779   -6.407781
     0.942478   -8.865048   -8.865051
     1.099558  -11.120865  -11.120852
     1.256637  -12.793068  -12.793087
     1.413717  -13.514934  -13.514949
     1.570796  -12.986656  -12.986496
 How many terms in Chebyshev evaluation?
 Enter n between 6 and 40. Enter n=0 to END.
         X        Actual   Cheby. Deriv.
    -0.785398    3.498888    3.499518
    -0.628319    1.283716    1.283655
    -0.471239    0.169560    0.168248
    -0.314159   -0.165508   -0.165224
    -0.157080   -0.097782   -0.096312
     0.000000    0.000000    0.000605
     0.157080   -0.190228   -0.191344
     0.314159   -0.891418   -0.893046
     0.471239   -2.204569   -2.204794
     0.628319   -4.097215   -4.095545
     0.785398   -6.407779   -6.406018
     0.942478   -8.865048   -8.865689
     1.099558  -11.120865  -11.123613
     1.256637  -12.793068  -12.793134
     1.413717  -13.514934  -13.510446
     1.570796  -12.986656  -13.007015
 How many terms in Chebyshev evaluation?
 Enter n between 6 and 40. Enter n=0 to END.