Bessel Function Y1 x actual bessy1(x) 0.10 -6.4589510 -6.4589510 1.00 -0.7812128 -0.7812128 2.00 -0.1070324 -0.1070324 3.00 0.3246744 0.3246744 4.00 0.3979257 0.3979257 5.00 0.1478631 0.1478631 6.00 -0.1750103 -0.1750104 7.00 -0.3026672 -0.3026672 8.00 -0.1580605 -0.1580605 9.00 0.1043146 0.1043146 10.00 0.2490154 0.2490154 11.00 0.1637055 0.1637055 12.00 -0.0570992 -0.0570992 13.00 -0.2100814 -0.2100814 14.00 -0.1666448 -0.1666448