x

Exact solution

Numerical solution

0.2π

−0.47090040218675855

−0.47064203333751690

0.3π

−0.64813879991245870

−0.64771280914059780

0.4π

−0.76193285605417060

−0.76136720198110770

0.5π

−0.80114361554693370

−0.80052412271783310

0.6π

−0.76193285605417060

−0.76136720198119200

0.7π

−0.64813879991245870

−0.64771280914063270

0.8π

−0.47090040218675855

−0.47064203333747706