Roots of bessj0: x f(x) root 1 2.404826 0.000000 root 2 5.520078 0.000000 root 3 8.653728 0.000000 root 4 11.791534 0.000000 root 5 14.930918 0.000000 root 6 18.071064 0.000000 root 7 21.211637 0.000000 root 8 24.352472 0.000000 root 9 27.493479 0.000000 root 10 30.634607 0.000000 root 11 33.775822 0.000000 root 12 36.917099 0.000000 root 13 40.058426 0.000000 root 14 43.199791 0.000000 root 15 46.341187 0.000000 root 16 49.482609 0.000000