n

$x_k$

$A_k$

2

±0.5773502692

1.0000000000

3

±0.7745966692

0.0000000000

0.5555555556

0.8888888889

4

±0.8611363116

±0.3399810436

0.3478548451

0.6521451549

5

±0.9061798459

±0.5384693101

0.0000000000

0.2369268851

0.4786286705

0.5688888888

6

±0.9324695142

±0.6612093865

±0.2386191861

0.1713244924

0.3607615730

0.4679139346

7

±0.9491079123

±0.7415311856

±0.4058451514

0.0000000000

0.1294849662

0.2797053915

0.3818300505

0.4179591837

8

±0.9602898565

±0.7966664774

±0.5255324099

±0.1834346425

0.1012285363

0.2223810345

0.3137066459

0.3626837834