x

True solution

Numerical solution

0.07π

0.211415560113106

0.212781989904912

0.17π

0.493342243118144

0.496403435602516

0.27π

0.726977150049252

0.731322133816448

0.37π

0.889450468385897

0.894631106006615

0.47π

0.964858177711116

0.970411644544139

0.57π

0.945818846039751

0.951279053551595

0.67π

0.834196175810620

0.839097661902968

0.77π

0.640916571706624

0.644800283101537

0.87π

0.384899588035650

0.387329859409562

0.97π

0.091205950934626

0.091795241347949