Modified Bessel Function I1

    x       actual     bessi1(x) 
  0.00    0.0000000    0.0000000
  0.20    0.1005008    0.1005008
  0.40    0.2040267    0.2040268
  0.60    0.3137040    0.3137040
  0.80    0.4328648    0.4328648
  1.00    0.5651591    0.5651591
  1.20    0.7146779    0.7146780
  1.40    0.8860919    0.8860919
  1.60    1.0848107    1.0848106
  1.80    1.3171674    1.3171672
  2.00    1.5906368    1.5906368
  2.50    2.5167162    2.5167162
  3.00    3.9533701    3.9533703
  3.50    6.2058349    6.2058349
  4.00    9.7594652    9.7594652
  4.50   15.3892212   15.3892231
  5.00   24.3356438   24.3356419
  6.00   61.3419380   61.3419380
  8.00  399.8731384  399.8731384
 10.00 2670.9882812 2670.9882812