Approximation of a root of
x
3
- ax - b = 0, a > 0, b > 0
6
2
2.380476143
2.271526348
2.262638892
2.261874524
2.261808492
2.261802785
2.261802292
2.261802249
2.261802246
2.261802245
2.261802245